Hard Drives (HDD)

Ranked by price per gigabyte

Updated daily · No paid placements

As of April 2026, the cheapest hard drives (hdd) on BuyPerUnit costs $0.0221/GB — a Avolusion Avolusion PRO-H1 Series 14TB 7200RPM USB 3.2 Gen2 (10Gbps) External Hard Drive (for Windows or MacOS Desktop PC/Laptop) (14 TB) available at Amazon for $309.99. BuyPerUnit tracks 264 hard drives (hdd) products across Amazon, Best Buy, and Newegg, updated daily. The average price is $0.0585/GB.
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1

Avolusion PRO-H1 Series 14TB 7200RPM USB 3.2 Gen2 (10Gbps) External Hard Drive (for Windows or MacOS Desktop PC/Laptop)

AvolusionAmazon2yrHDD62% below avg

Capacity

14 TB

Price

$309.99

$/GB

$0.022

Check Price at Amazon
2

Seagate - Game Drive for Xbox 8TB External USB 3.2 Gen 1 Desktop Hard Drive with Certified Xbox Green LED Lighting - Black

SeagateBest BuyHDD
4.6(78)
57% below avg

Capacity

8 TB

Price

$199.99

$/GB

$0.025

Check Price at Best Buy
3

WD 18TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Auto Backup Software - WDBBGB0180HBK-NESN

Western DigitalAmazonHDD56% below avg

Capacity

18 TB

Price

$463.99

$/GB

$0.026

Check Price at Amazon
4

WD 16TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Backup Software - WDBBGB0160HBK-NESN

Western DigitalAmazonHDD55% below avg

Capacity

16 TB

Price

$425.00

$/GB

$0.027

Check Price at Amazon
5

WD - D10 Game Drive for Xbox 12TB External USB 3.2 Gen 1 Portable Hard Drive - Black

Western DigitalBest BuyHDD
4.7(42)
54% below avg

Capacity

12 TB

Price

$319.99

$/GB

$0.027

Check Price at Best Buy
6

WD - easystore 20TB External USB 3.0 Hard Drive - Black

Western DigitalBest Buy2yrHDD
4.6(278)
52% below avg

Capacity

20 TB

Price

$559.99

$/GB

$0.028

Check Price at Best Buy
7

External Hard Drive Conversion Box For Series X/S Host M.2 Hard Drive Expansion Card Box For CHSN530 1TB Hard Disk-N33R

ExternalNeweggHDD52% below avg

Capacity

1TB

Price

$28.11

$/GB

$0.028

Check Price at Newegg
8

WD - easystore 18TB External USB 3.0 Hard Drive - Black

Western DigitalBest Buy2yrHDD
4.5(752)
52% below avg

Capacity

18 TB

Price

$509.99

$/GB

$0.028

Check Price at Best Buy
9

Western Digital 14TB Elements Desktop External Hard Drive - USB 3.0

Western DigitalAmazonHDD50% below avg

Capacity

14 TB

Price

$409.99

$/GB

$0.029

Check Price at Amazon
10

Western Digital 8TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Backup Software - WDBBGB0080HBK-NESN

Western DigitalAmazonHDD48% below avg

Capacity

8 TB

Price

$242.99

$/GB

$0.030

Check Price at Amazon
11

WD 14TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Backup Software - WDBBGB0140HBK-NESN

Western DigitalAmazonHDD47% below avg

Capacity

14 TB

Price

$429.99

$/GB

$0.031

Check Price at Amazon
12

Seagate - Expansion Desktop 8TB HDD - Black

SeagateBest Buy1yrHDD
4.7(170)
47% below avg

Capacity

8 TB

Price

$249.99

$/GB

$0.031

Check Price at Best Buy
13

Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400)

SeagateAmazonHDD47% below avg

Capacity

8 TB

Price

$249.99

$/GB

$0.031

Check Price at Amazon
14

Seagate - Game Drive for Xbox 5TB External USB 3.2 Gen 1 Portable Hard Drive Xbox Certified with Green LED Bar - Black

SeagateBest BuyHDD
4.5(77)
45% below avg

Capacity

5 TB

Price

$159.99

$/GB

$0.032

Check Price at Best Buy
15

Seagate - Astro Bot Limited Edition Game Drive for PlayStation 5TB External USB 3.2 Gen 1 Portable Hard Drive - White

SeagateBest BuyHDD
5.0(2)
45% below avg

Capacity

5 TB

Price

$159.99

$/GB

$0.032

Check Price at Best Buy
16

WD - BLACK P10 Game Drive for Xbox 5TB External USB 3.2 Gen 1 Portable Hard Drive - Black With White Trim

Western DigitalBest BuyHDD
4.7(473)
44% below avg

Capacity

5 TB

Price

$164.99

$/GB

$0.033

Check Price at Best Buy
17

WD 4TB My Passport, Portable External Hard Drive, Black, backup software with defense against ransomware, and password protection, USB 3.1/USB 3.0 compatible - WDBPKJ0040BBK-WESN

Western DigitalAmazonHDD90d low

Capacity

4 TB

Price

$136.76

$/GB

$0.034

Check Price at Amazon
18

WD - easystore 8TB External USB 3.0 Hard Drive - Black

Western DigitalBest Buy2yrHDD
4.7(7,212)
40% below avg

Capacity

8 TB

Price

$279.99

$/GB

$0.035

Check Price at Best Buy
19

Western Digital 8TB Elements Desktop External Hard Drive, USB 3.0 external hard drive for plug-and-play storage - Western DigitalBWLG0080HBK-NESN, Black

Western DigitalAmazonHDD40% below avg

Capacity

8 TB

Price

$279.99

$/GB

$0.035

Check Price at Amazon
20

WD 44TB My Book Duo Desktop RAID External Hard Drive HDD, USB 3.1, With Password Protection and Auto Backup Software - WDBFBE0440JBK-NESN

Western DigitalAmazon3yrHDD39% below avg

Capacity

44 TB

Price

$1569.99

$/GB

$0.036

Check Price at Amazon
21

WD - Easystore 6TB External USB 3.2 Gen 1 Portable Hard Drive - Black

Western DigitalBest Buy2yrHDD
4.6(104)
39% below avg

Capacity

6 TB

Price

$214.99

$/GB

$0.036

Check Price at Best Buy
22

Seagate - Game Drive for PlayStation Consoles 5TB External USB 3.2 Gen 1 Portable Hard Drive with Blue LED Lighting - White

SeagateBest Buy3yrHDD
4.6(511)
38% below avg

Capacity

5 TB

Price

$179.99

$/GB

$0.036

Check Price at Best Buy
23

Toshiba Canvio Basics 4TB Portable External Hard Drive USB 3.0, Black - HDTB540XK3CA

TOSHIBAAmazon1yrHDD38% below avg

Capacity

4 TB

Price

$145.00

$/GB

$0.036

Check Price at Amazon
24

Seagate Expansion 6TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP6000400)

SeagateAmazonHDD37% below avg

Capacity

6 TB

Price

$219.99

$/GB

$0.037

Check Price at Amazon
25

WD - Easystore 5TB External USB 3.2 Gen 1 Portable Hard Drive - Black

Western DigitalBest Buy2yrHDD
4.7(11,984)
37% below avg

Capacity

5 TB

Price

$184.99

$/GB

$0.037

Check Price at Best Buy
26

Western Digital WD 5TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready - WDBU6Y0050BBK-WESN

Western DigitalAmazon2yrHDD37% below avg

Capacity

5 TB

Price

$184.99

$/GB

$0.037

Check Price at Amazon
27

WD 4TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready - ‎WDBU6Y0040BBK-WESN

Western DigitalAmazon2yrHDD36% below avg

Capacity

4 TB

Price

$149.99

$/GB

$0.037

Check Price at Amazon
28

WD - My Passport 6TB External USB 3.0 Portable Hard Drive - Black

Western DigitalBest Buy3yrHDD
4.7(1,802)
36% below avg

Capacity

6 TB

Price

$224.99

$/GB

$0.037

Check Price at Best Buy
29

WD - D10 8TB External USB 3.2 Gen 1 Portable Hard Drive - Black

Western DigitalBest Buy3yrHDD
4.7(973)
250 / 250MB/s
36% below avg

Capacity

8 TB

Price

$299.99

$/GB

$0.037

Check Price at Best Buy
30

Seagate - Expansion 5TB External USB 3.0 Portable Hard Drive with Rescue Data Recovery Services - Black

SeagateBest Buy1yrHDD
4.8(272)
35% below avg

Capacity

5 TB

Price

$189.99

$/GB

$0.038

Check Price at Best Buy
31

WD - My Passport 5TB External USB 3.0 Portable Hard Drive - Black

Western DigitalBest Buy3yrHDD
4.7(2,876)
33% below avg

Capacity

5 TB

Price

$194.99

$/GB

$0.039

Check Price at Best Buy
32

WD - P10 5TB External USB 3.2 Gen 1 Portable Hard Drive - Black

Western DigitalBest Buy3yrHDD
4.8(470)
140 / 140MB/s
32% below avg

Capacity

5 TB

Price

$199.99

$/GB

$0.040

Check Price at Best Buy
33

WD - My Cloud Home 4TB Personal Cloud - White

Western DigitalBest Buy2yrHDD
4.0(1,469)
32% below avg

Capacity

4 TB

Price

$159.99

$/GB

$0.040

Check Price at Best Buy
34

Western Digital 6TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Auto Backup Software - WDBBGB0060HBK-NESN

Western DigitalAmazonHDD32% below avg

Capacity

6 TB

Price

$239.99

$/GB

$0.040

Check Price at Amazon
35

Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (SRD0NF1)

SeagateAmazon1yrHDD32% below avg

Capacity

4 TB

Price

$159.99

$/GB

$0.040

Check Price at Amazon
36

WD 5TB My Passport Ultra, Blue, Portable External Hard Drive, backup software with defense against ransomware, and password protection, USB-C and USB 3.1 - WDBFTM0050BBL-WESN

Western DigitalAmazonHDD30% below avg

Capacity

5 TB

Price

$204.99

$/GB

$0.041

Check Price at Amazon
37

Seagate Rugged STFR5000800 5 TB External Hard Drive, Portable

LaCieAmazon2yrHDD29% below avg

Capacity

5 TB

Price

$207.90

$/GB

$0.042

Check Price at Amazon
38

LaCie 5TB Rugged USB-C Portable Hard Drive

LaCieAmazonHDD29% below avg

Capacity

5 TB

Price

$209.00

$/GB

$0.042

Check Price at Amazon
39

LaCie - Rugged 5TB External USB-C, USB 3.1 Gen 1 Portable Hard Drive - Orange/Silver

LaCieBest Buy2yrHDD
4.7(871)
28% below avg

Capacity

5 TB

Price

$209.99

$/GB

$0.042

Check Price at Best Buy
40

WD - My Passport for Mac 4TB External USB 3.0 Portable Hard Drive - Blue

Western DigitalBest Buy3yrHDD
4.6(607)
25% below avg

Capacity

4 TB

Price

$174.99

$/GB

$0.044

Check Price at Best Buy
41

WD - My Passport Ultra 4TB External USB 3.0 Portable Hard Drive - Silver

Western DigitalBest Buy3yrHDD
4.7(1,169)
23% below avg

Capacity

4 TB

Price

$179.99

$/GB

$0.045

Check Price at Best Buy
42

WD - My Passport Ultra for Mac 4TB External USB 3.0 Portable Hard Drive - Silver

Western DigitalBest Buy3yrHDD
4.5(549)
23% below avg

Capacity

4 TB

Price

$179.99

$/GB

$0.045

Check Price at Best Buy
43

Western Digital 4TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Backup Software - WDBBGB0040HBK-NESN

Western DigitalAmazonHDD23% below avg

Capacity

4 TB

Price

$180.90

$/GB

$0.045

Check Price at Amazon
44

Seagate One Touch, 2TB, Password activated hardware encryption, portable external hard drive, portable external hard drive, PC, Notebook & Mac, USB 3.0, Black (STKY2000400)

SeagateAmazon2yrHDD21% below avg

Capacity

2 TB

Price

$92.38

$/GB

$0.046

Check Price at Amazon
45

NRICO Ultra Slim 750GB Portable External Hard Drive USB3.0 HDD Storage Compatible for PC, Desktop, Laptop,Mac,PS4, Xbox one (Black, 750, GB)

NRICOAmazon3yrHDD

Capacity

750 GB

Price

$37.00

$/GB

$0.049

Check Price at Amazon
46

Toshiba Canvio Basics 2TB Portable External Hard Drive USB 3.0, Black - HDTB520XK3AA

TOSHIBAAmazon1yrHDD

Capacity

2 TB

Price

$99.00

$/GB

$0.050

Check Price at Amazon
47

Seagate - Game Drive for Xbox 2TB External USB 3.2 Gen 1 Portable Hard Drive Xbox Certified with Green LED Bar - Black

SeagateBest BuyHDD
4.6(978)

Capacity

2 TB

Price

$99.99

$/GB

$0.050

Check Price at Best Buy
48

SanDisk Professional 5TB G-Drive ArmorATD - Rugged, Durable Portable External Hard Drive HDD, USB-C, USB 3.2 Gen 1 - SDPH81G-005T-GBA1D

Western DigitalAmazon3yrHDD

Capacity

5 TB

Price

$254.99

$/GB

$0.051

Check Price at Amazon
49

IFLASH 1TB Portable External Hard Drive

IFLASHAmazonHDD

Capacity

1 TB

Price

$51.99

$/GB

$0.052

Check Price at Amazon
50

Tianken Ultra Slim Portable External Hard Drive USB 3.0 HDD Storage for PC, Laptop, Mac, Xbox one, PS4, PS5 (750GB)

TiankenAmazon1yrHDD

Capacity

750 GB

Price

$40.99

$/GB

$0.055

Check Price at Amazon
51

Seagate - One Touch with Password 2TB External USB 3.0 Portable Hard Drive with Rescue Data Recovery Services - Black

SeagateBest Buy2yrHDD
4.8(107)

Capacity

2 TB

Price

$109.99

$/GB

$0.055

Check Price at Best Buy
52

WD - Easystore 2TB External USB 3.2 Gen 1 Portable Hard Drive - Black

Western DigitalBest Buy2yrHDD
4.7(17,565)

Capacity

2 TB

Price

$109.99

$/GB

$0.055

Check Price at Best Buy
53

Maxone 500GB Ultra Slim Portable External Hard Drive HDD Compatible with PC, Laptop, Grey

MaxoneAmazon3yrHDD

Capacity

500 GB

Price

$27.99

$/GB

$0.056

Check Price at Amazon
54

NRICO Portable External Hard Drive, USB 3.0, 2.5 Inch, Compatible with PC, Mac, Desktop (Blue, 500, GB)

NRICOAmazon2yrHDD90d low

Capacity

500 GB

Price

$28.49

$/GB

$0.057

Check Price at Amazon
55

YOTUO Portable External Hard Drive Storage Expansion Mobile HDD USB 3.0 for PC, Mac, Desktop, Laptop, PS4, PS5, Xbox One X/S, Xbox 360, Xbox Series X/S, Office & Game (Black, 750GB)

YOTUOAmazonHDD

Capacity

750 GB

Price

$42.74

$/GB

$0.057

Check Price at Amazon
56

SanDisk Professional - G-DRIVE ArmorATD 4TB External USB-C Portable Hard Drive - Space Gray

G-DRIVEBest Buy3yrHDD
4.4(91)
130 / 130MB/s

Capacity

4 TB

Price

$229.99

$/GB

$0.057

Check Price at Best Buy
57

Caraele 500GB Portable External Hard Drive USB3.0 Mobile HDD Storage for PC, Mac, Desktop, Laptop, Mac, Chromebook, Xbox One, Xbox 360, PS4 (Black)

CaraeleAmazon1yrHDD

Capacity

500 GB

Price

$28.99

$/GB

$0.058

Check Price at Amazon
58

Caraele 500GB Ultra Slim Portable External Hard Drive USB3.0 HDD Storage Compatible for PC, Desktop, Laptop, MacBook, Chromebook, Xbox One, Xbox 360, PS4 (Black)

CaraeleAmazon1yrHDD

Capacity

500 GB

Price

$28.99

$/GB

$0.058

Check Price at Amazon
59

SanDisk Professional 5TB G-DRIVE ArmorATD - Rugged, Durable Portable External Hard Drive HDD, USB-C, USB 3.2 Gen 1 - SDPH81G-005T-GBAND

SanDiskAmazonHDD

Capacity

5 TB

Price

$289.95

$/GB

$0.058

Check Price at Amazon
60

LaCie Rugged Mini, 2TB, 2.5", Portable External Hard Drive, for PC Mac iPad and iPhone, Data Rescue Service (LAC9000298)

LaCieAmazon2yrHDD

Capacity

2 TB

Price

$119.49

$/GB

$0.060

Check Price at Amazon
61

NRICO 500GB Portable External Hard Drive USB 3.0 HDD 2.5inch Storage Compatible for PC, Mac, Desktop,PS4 (500GB, Grey)

NRICOAmazon3yrHDD

Capacity

500 GB

Price

$29.99

$/GB

$0.060

Check Price at Amazon
62

GAZELLE High-Speed 1TB Ultra Slim Portable External Hard Drive - 2-in-1 Type C & USB 3.0, Compatible with PC, Mac, Laptop, PS4, Xbox, iPad, Tablet, Mobile (Black) - 1 Year Warranty

GAZELLEAmazonHDD

Capacity

1 TB

Price

$59.99

$/GB

$0.060

Check Price at Amazon
63

Seagate - Expansion 2TB External USB 3.0 Portable Hard Drive with Rescue Data Recovery Services - Black

SeagateBest Buy1yrHDD
4.7(646)

Capacity

2 TB

Price

$119.99

$/GB

$0.060

Check Price at Best Buy
64

Seagate Portable 2TB External Hard Drive HDD — USB 3.0 for PC, Mac, PlayStation, & Xbox -1-Year Rescue Service (STGX2000400)

SeagateAmazon1yrHDD

Capacity

2 TB

Price

$119.99

$/GB

$0.060

Check Price at Amazon
65

WD - My Passport for Mac 2TB External USB 3.0 Portable Hard Drive - Blue

Western DigitalBest Buy3yrHDD
4.7(1,373)

Capacity

2 TB

Price

$119.99

$/GB

$0.060

Check Price at Best Buy
66

NRICO Ultra Slim 500GB Portable External Hard Drive USB3.0 HDD Storage Compatible for PC, Desktop, Laptop,Mac,PS4, Xbox one (Black, 500, GB)

NRICOAmazon3yrHDD

Capacity

500 GB

Price

$30.99

$/GB

$0.062

Check Price at Amazon
67

Ezekers Portable 500GB External Hard Drive - USB 3.0 & USB C for PC, Mac, PS5 (Storage Only), PS4, Phone (Android and iPhone 15/16/17) & Xbox - Ultra Fast

ezekersAmazonHDD

Capacity

500 GB

Price

$30.99

$/GB

$0.062

Check Price at Amazon
68

Aiolo Innovation 500GB External Hard Drive Ultra Slim Portable HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one,Xbox 360 HD-A4

Aiolo InnovationAmazonHDD90d low

Capacity

500 GB

Price

$31.12

$/GB

$0.062

Check Price at Amazon
69

WD - My Passport Ultra for Mac 2TB External USB 3.0 Portable Hard Drive - Silver

Western DigitalBest Buy3yrHDD
4.7(754)

Capacity

2 TB

Price

$124.99

$/GB

$0.062

Check Price at Best Buy
70

NRICO Portable External Hard Drive, USB 3.0, 2.5 Inch, Compatible with PC, Mac, Desktop (Grey, 320, GB)

NRICOAmazon2yrHDD90d low

Capacity

320 GB

Price

$20.00

$/GB

$0.063

Check Price at Amazon
71

WD 2TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready - WDBU6Y0020BBK-WESN

Western DigitalAmazonHDD

Capacity

2 TB

Price

$125.08

$/GB

$0.063

Check Price at Amazon
72

UnionSine 1TB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black)

UnionSineAmazonHDD

Capacity

1 TB

Price

$63.21

$/GB

$0.063

Check Price at Amazon
73

ModusTech 500GB Portable External Hard Drive USB 3.0/Type-C – Slim High-Speed HDD for Backup, Storage, Gaming – Compatible with PC, Mac, Laptop, PS4, PS5, Xbox, Windows, MacBook, Smart TV (Black)

ModusTechAmazon1yrHDD

Capacity

500 GB

Price

$31.91

$/GB

$0.064

Check Price at Amazon
74

Maxone 500GB Ultra Slim Portable External Hard Drive HDD USB 3.0 Compatible with PC, Laptop - Rose Pink

MaxoneAmazonHDD

Capacity

500 GB

Price

$31.99

$/GB

$0.064

Check Price at Amazon
75

HWAYO 2.5'' 1TB Ultra Slim Portable External Hard Drive USB3.0 HDD Storage for PC, Desktop, Laptop, MacBook, Chromebook, Xbox One, HDD

HWAYOAmazonHDD

Capacity

1 TB

Price

$64.99

$/GB

$0.065

Check Price at Amazon
76

LaCie - Rugged 2TB External USB-C, USB 3.1 Gen 1 Portable Hard Drive - Orange/Silver

LaCieBest Buy2yrHDD
4.7(1,006)

Capacity

2 TB

Price

$129.99

$/GB

$0.065

Check Price at Best Buy
77

Kosbees 500 GB External Hard Drives,Portable Hard Drive for Windows,Ultra Slim External HDD Store Compatible with PC, MAC,Laptop,PS4, Xbox one, Xbox 360;Plug and Play Ready

KosbeesAmazonHDD

Capacity

500 GB

Price

$32.99

$/GB

$0.066

Check Price at Amazon
78

Tianken Ultra Slim Portable External Hard Drive USB 3.0 HDD Storage for PC, Laptop, Mac, Xbox one, PS4, PS5 (1TB)

TiankenAmazon1yrHDD

Capacity

1 TB

Price

$65.99

$/GB

$0.066

Check Price at Amazon
79

Tianken 1TB Ultra Slim Portable External Hard Drive USB 3.0 HDD Storage for PC, Mac, Laptop, PS4, Xbox one

TiankenAmazonHDD

Capacity

1 TB

Price

$65.99

$/GB

$0.066

Check Price at Amazon
80

Tianken Ultra Slim Portable External Hard Drive USB 3.1 Type C HDD Storage for PC, Mac, Laptop, PS4, Xbox one (1TB)

TiankenAmazon1yrHDD

Capacity

1 TB

Price

$66.99

$/GB

$0.067

Check Price at Amazon
81

Maxone 500GB Ultra Slim Portable External Hard Drive HDD USB 3.0 Compatible with PC, Laptop, Charcoal Grey

MaxoneAmazonHDD

Capacity

500 GB

Price

$34.39

$/GB

$0.069

Check Price at Amazon
82

YOTUO Portable External Hard Drive Storage Expansion Mobile HDD USB 3.0 USB-C for PC, Mac, Desktop, Laptop, PS4, Xbox One X/S, Xbox 360, Office & Game (Black, 1TB)

YOTUOAmazonHDD90d low

Capacity

1 TB

Price

$69.99

$/GB

$0.070

Check Price at Amazon
83

Kosbees 1 TB External Hard Drives,Portable Hard Drive for Windows,Ultra Slim External HDD Store Compatible with PC, MAC,Laptop,PS4, Xbox one, Xbox 360;Plug and Play Ready

KosbeesAmazonHDD

Capacity

1 TB

Price

$69.99

$/GB

$0.070

Check Price at Amazon
84

YOTUO Portable External Hard Drive Storage Expansion Mobile HDD USB 3.0 for PC, Mac, Desktop, Laptop, PS4, PS5, Xbox One X/S, Xbox 360, Xbox Series X/S, Office & Game (Black, 500GB)

YOTUOAmazonHDD

Capacity

500 GB

Price

$35.99

$/GB

$0.072

Check Price at Amazon
85

ADATA HD710 Pro - 2 TB External Hard Drive - Shockproof, Waterproof & Dustproof - Durable Storage - For Gamers, Students & Professionals - Mac, PC & Linux Compatible - Black - AHD710P-2TU31-CBK

ADATAAmazon3yrHDD

Capacity

2 TB

Price

$147.39

$/GB

$0.074

Check Price at Amazon
86

320GB External Hard Drive, USB 3.1 Type-C Portable HDD, Ultra-Slim 2.5-Inch Backup Storage for PC, Laptop, Tablet & Gaming Console – Black

GenericAmazon1yrHDD

Capacity

320 GB

Price

$23.99

$/GB

$0.075

Check Price at Amazon
87

Toshiba Canvio Basics 2TB Portable External Hard Drive USB 3.0, Black - HDTB420XK3AA

TOSHIBAAmazon1yrHDD

Capacity

2 TB

Price

$162.99

$/GB

$0.081

Check Price at Amazon
88

PILCNLA Ultra Slim Portable External Hard Drive USB3.0 HDD Storage 250GB for Xbox One X/S, Xbox 360, PS4, PC, Desktop, Laptop, MacBook, Chromebook

PILCNLAAmazon1yrHDD

Capacity

250 GB

Price

$20.99

$/GB

$0.084

Check Price at Amazon
89

Aiolo Innovation 320GB External Hard Drive Ultra Slim Portable HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one,Xbox 360 HD-A4

Aiolo InnovationAmazonHDD

Capacity

320 GB

Price

$26.97

$/GB

$0.084

Check Price at Amazon
90

Seagate Portable 1TB External Hard Drive HDD – USB 3.0 for PC, Mac, PlayStation, & Xbox, 1-Year Rescue Service (STGX1000400) , Black

SeagateAmazonHDD

Capacity

1 TB

Price

$89.99

$/GB

$0.090

Check Price at Amazon
91

Vansuny 2TB Portable External SSD, USB 3.1 Gen2 Up to 500MB/s Solid State Drive, Metal USB C Mini Portable External Hard Drive for PC, Laptop, Phones and More

VansunyAmazonHDD

Capacity

2 TB

Price

$180.99

$/GB

$0.090

Check Price at Amazon
92

Tianken 250GB Ultra Slim Portable External Hard Drive 2.5'' HDD USB 3.1 Type-C Storage for PC, Mac, Laptop

TiankenAmazon1yrHDD

Capacity

250 GB

Price

$24.99

$/GB

$0.100

Check Price at Amazon
93

Crucial X10 8TB Portable SSD, Up to 2,100MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac & Android, Durable Storage for Games, Photos & Files, Blue - CT8000X10SSD9-02

CrucialAmazonHDD

Capacity

8 TB

Price

$845.99

$/GB

$0.106

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94

LaCie - Rugged 1TB External USB-C, USB 3.1 Gen 1 Portable Hard Drive - Orange/Silver

LaCieBest Buy2yrHDD
4.7(68)

Capacity

1 TB

Price

$109.99

$/GB

$0.110

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95

Toshiba Canvio Basics 1TB Portable External Hard Drive USB 3.0, Black - HDTB510XK3AA

TOSHIBAAmazon1yrHDD

Capacity

1 TB

Price

$125.00

$/GB

$0.125

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96

Tianken 160GB Ultra Slim Portable External Hard Drive USB 3.1 Type C HDD Storage for PC, Mac, Laptop, PS4, Xbox one

TiankenAmazon1yrHDD

Capacity

160 GB

Price

$22.99

$/GB

$0.144

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97

HWAYO 160GB Ultra Slim Portable External Hard Drive USB3.0 2.5'' HDD Storage for PC, Desktop, Laptop, MacBook, Chromebook (Black)

HWAYOAmazonHDD

Capacity

160 GB

Price

$24.99

$/GB

$0.156

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98

Super Talent PS302 1TB Portable External SSD, USB 3.2 Gen 2, Up to 1050MB/s, 2-in-1 Type C & Type A, Plug & Play, Compatible with Android, Mac, Windows, Supports 4K, Drop-Proof, FUS1T0302, Gray

Super TalentAmazon3yrHDD

Capacity

1 TB

Price

$179.99

$/GB

$0.180

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99

Tianken 120GB Ultra Slim Portable External Hard Drive USB 3.1 Type C HDD Storage for PC, Mac, Laptop, PS4, Xbox one

TiankenAmazon1yrHDD

Capacity

120 GB

Price

$21.99

$/GB

$0.183

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100

ADATA SC735 External SSD - 2TB USB 3.2 Gen2 Portable Solid State Drive for Gaming & High Speed Data Transfer - Up to 1050/1000MB/s - MIL-STD Drop Resistant - Black/Grey - 1 Count

ADATAAmazonHDD

Capacity

2 TB

Price

$376.12

$/GB

$0.188

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Buy Cheap Hard Drives: Find the Best HDD Deals in 2026

Looking to buy cheap hard drives? You're in the right place. BuyPerUnit compares 264+ HDDs ranked by price per gigabyte — the only metric that truly shows you which drives offer the best value for your money.

Right now, the cheapest HDD storage starts at just $0.022/GB, while the average across all drives is $0.058/GB. Whether you need bulk storage for backups, a NAS, or a media server, we help you find the best deal. For faster storage, compare SSDs here.

HDD Buying Guide: Get the Best Value

1. Compare Price Per GB

A $150 4TB drive ($0.037/GB) beats a $70 1TB drive ($0.07/GB) in value. Always divide price by capacity to find the real cost — that's what we do for every listing.

2. Bigger = Cheaper Per GB

Storage follows economies of scale. 4TB+ drives almost always have the lowest price per gigabyte. Buy more capacity upfront to save long-term.

3. Match RPM to Your Use Case

7200 RPM drives are faster and better for desktop use or active NAS workloads. 5400 RPM drives run cooler and quieter — ideal for bulk archival or always-on backup drives where speed is less critical.

4. Watch for Sales

Hard drive prices fluctuate. We update prices daily so you can catch the best deals. Bookmark this page and check back regularly.

3.5" Desktop vs 2.5" Laptop HDD: Which Should You Buy?

TypeTypical $/GBMax CapacityBest For
3.5" Desktop HDD$0.015–0.02520TB+Desktop PC, NAS, media server
2.5" Laptop HDD$0.025–0.0455TBLaptop upgrade, portable use
External HDD$0.020–0.04020TB+Backup, portable storage, archiving

Frequently Asked Questions About Buying Hard Drives

What is the cheapest hard drive per GB right now?
The cheapest HDD storage per gigabyte is currently $0.0221/GB. Large capacity 3.5" desktop drives (6TB+) from Seagate or WD consistently offer the lowest price per gigabyte in the HDD category.
Is it better to buy one large hard drive or multiple smaller ones?
One large drive is almost always cheaper per GB. However, multiple drives provide redundancy — if one fails, you don't lose everything. For important data, consider buying two drives and keeping backups on both.
Should I buy 5400 RPM or 7200 RPM?
For desktop use or a NAS with active read/write workloads, 7200 RPM is noticeably faster and worth the small premium. For cold storage, archival backups, or always-on low-activity drives, 5400 RPM runs cooler, quieter, and uses less power.
When is the best time to buy cheap hard drives?
Black Friday, Cyber Monday, and Amazon Prime Day typically have the best deals. However, prices fluctuate year-round. We update our rankings daily so you can always find the current best value.
What brands make the most reliable hard drives?
Seagate, Western Digital (WD), and Toshiba are the three major HDD manufacturers. All produce reliable drives at different price points. Seagate Barracuda and WD Blue are popular desktop choices; WD Red and Seagate IronWolf are designed for NAS use.

How We Find the Cheapest Hard Drives

BuyPerUnit calculates the price per gigabyte for every hard drive by dividing the current price by the storage capacity. This gives you the true cost of storage, making it easy to compare drives of different sizes.

Products are ranked from best value (lowest $/GB) to worst. We update prices regularly from Amazon, Best Buy, and Newegg to ensure you always see current deals. Click any product to view the latest price and purchase directly.

BuyPerUnit is an affiliate site. We earn a commission when you purchase through our links at no extra cost to you.

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