Hard Drives & SSDs

Ranked by price per gigabyte

Updated daily · No paid placements

As of March 2026, the cheapest hard drives & ssds on BuyPerUnit costs $0.0064/GB — a Aocesk Portable Mobile Solid State Drive, 2TB Portable SSD, External Hard Drive USB C Portable SSD, Up to 3.0 High-Speed Transmission, USB 3.1, External Solid State Drive for Android, Windows, MacOS (Blue) (2 TB) available at Amazon for $12.89. BuyPerUnit tracks 884 hard drives & ssds products across Amazon, Best Buy, and Newegg, updated daily. The average price is $0.0363/GB.
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1

Portable Mobile Solid State Drive, 2TB Portable SSD, External Hard Drive USB C Portable SSD, Up to 3.0 High-Speed Transmission, USB 3.1, External Solid State Drive for Android, Windows, MacOS (Blue)

AoceskAmazon1yrSATA SSD82% below avg

Capacity

2 TB

Price

$12.89

$/GB

$0.0064

2

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

Western DigitalBest Buy2yrHDD
4.5(751)
40% below avg

Capacity

18 TB

Price

$389.99

$/GB

$0.022

3

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

Western DigitalBest Buy2yrHDD
4.6(273)
39% below avg

Capacity

20 TB

Price

$439.99

$/GB

$0.022

4

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

Western DigitalAmazonHDD38% below avg

Capacity

16 TB

Price

$360.43

$/GB

$0.023

5

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

Western DigitalAmazonHDD36% below avg

Capacity

18 TB

Price

$419.99

$/GB

$0.023

6

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

SeagateAmazonHDD90d low

Capacity

8 TB

Price

$195.35

$/GB

$0.024

7

Western Digital 6TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD60EFPX

Western DigitalAmazon3yrHDD31% below avg

Capacity

6 TB

Price

$149.70

$/GB

$0.025

8

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)
31% below avg

Capacity

8 TB

Price

$199.99

$/GB

$0.025

9

Seagate - Barracuda 8TB Internal Hard Drive for Desktops

SeagateBest Buy2yrHDD
4.6(408)
190 / 190MB/s
31% below avg

Capacity

8 TB

Price

$199.99

$/GB

$0.025

10

Seagate - IronWolf Pro 20TB NAS Internal Hard Drive with Rescue Data Recovery Services

SeagateBest Buy5yrHDD
4.7(29)
285 / 285MB/s
31% below avg

Capacity

20 TB

Price

$499.99

$/GB

$0.025

11

WD - Blue 4TB PC Internal Hard Drive for Desktops

Western DigitalBest Buy2yrHDD
4.7(1,959)
175 / 175MB/s
28% below avg

Capacity

4 TB

Price

$104.99

$/GB

$0.026

12

Western Digital 10TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 GB/s, CMR, 512 MB Cache, 3.5" - WD100EFGX

Western DigitalAmazonHDD27% below avg

Capacity

10 TB

Price

$264.99

$/GB

$0.026

13

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

Western DigitalBest BuyHDD
4.7(42)
27% below avg

Capacity

12 TB

Price

$319.99

$/GB

$0.027

14

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

Western DigitalBest Buy2yrHDD
4.7(11,980)
90d low

Capacity

5 TB

Price

$134.99

$/GB

$0.027

15

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 DigitalAmazon2yrHDD26% below avg

Capacity

5 TB

Price

$134.99

$/GB

$0.027

16

Seagate - Expansion Desktop 8TB HDD - Black

SeagateBest Buy1yrHDD
4.7(169)
24% below avg

Capacity

8 TB

Price

$219.99

$/GB

$0.027

17

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

ExternalNeweggHDD23% below avg

Capacity

1TB

Price

$28.11

$/GB

$0.028

18

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

Western DigitalBest Buy2yrHDD
4.7(7,204)
23% below avg

Capacity

8 TB

Price

$224.99

$/GB

$0.028

19

WD - Red Plus 8TB NAS Internal Hard Drive

Western DigitalBest Buy3yrHDD
4.8(67)
215 / 215MB/s
23% below avg

Capacity

8 TB

Price

$224.99

$/GB

$0.028

20

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

Western DigitalAmazonHDD23% below avg

Capacity

8 TB

Price

$224.99

$/GB

$0.028

21

WD_Black 6TB P10 Game Drive, Portable External Hard Drive, Works with PlayStation, Xbox, & PC - WDBZ7D0060BBK-WESN

Western DigitalAmazonHDD22% below avg

Capacity

6 TB

Price

$169.99

$/GB

$0.028

22

Seagate 4 TB 3.5" Internal Hard Drive

SeagateAmazonHDD22% below avg

Capacity

4 TB

Price

$114.00

$/GB

$0.029

23

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

Western DigitalAmazonHDD21% below avg

Capacity

14 TB

Price

$399.99

$/GB

$0.029

24

Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ

Western DigitalAmazon2yrHDD21% below avg

Capacity

12 TB

Price

$344.15

$/GB

$0.029

25

Western Digital 6TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD60EZAX

Western DigitalAmazon2yrHDD21% below avg

Capacity

6 TB

Price

$172.99

$/GB

$0.029

26

Seagate Exos X18 ST18000NM001J 18 TB Hard Drive - Internal - SATA (SATA-600)

SeagateNeweggHDD20% below avg

Capacity

18TB

Price

$520.00

$/GB

$0.029

27

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

Western DigitalBest Buy2yrHDD
4.7(98)

Capacity

6 TB

Price

$174.99

$/GB

$0.029

28

WD 6TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready - WDBHJS0060BBK-WESN

Western DigitalAmazon2yrHDD

Capacity

6 TB

Price

$174.99

$/GB

$0.029

29

WD_BLACK 5TB P10 Game Drive, Portable External Hard Drive, Works with Playstation, Xbox, & PC - WDBA3A0050BBK-WESN

Western DigitalAmazonHDD

Capacity

5 TB

Price

$147.00

$/GB

$0.029

30

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

Western DigitalAmazonHDD90d low

Capacity

8 TB

Price

$237.04

$/GB

$0.030

31

Seagate 4TB BarraCuda SATA 6Gb/s 256MB Cache 3.5-Inch Internal Hard Drive (ST4000DM004) Single Pack,Mechanical Hard Disk

SeagateAmazonHDD

Capacity

4 TB

Price

$118.99

$/GB

$0.030

32

MaxDigitalData 6TB 7200RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive for Surveillance (MD6000GSA12872DVR) - 3 Years Warranty

MDD MAXDIGITALDATAAmazon3yrHDD

Capacity

6 TB

Price

$179.99

$/GB

$0.030

33

MDD MAXDIGITALDATA (MDD4000GSA6472 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Desktop Hard Drive (for Desktop PC, Mac, CCTV DVR, Surveillence, Server, NAS)

MDD MAXDIGITALDATAAmazon3yrHDD

Capacity

4 TB

Price

$119.99

$/GB

$0.030

34

WL 4TB 64MB Cache 5400RPM SATA III (6.0Gb/s) 3.5" Internal Surveillance DVR Hard Drive - w/ 1 Year Warranty

GoHardDriveAmazonHDD

Capacity

4 TB

Price

$119.99

$/GB

$0.030

35

WD 6TB My Passport, Portable External Hard Drive, Black, Backup Software with Defense Against ransomware, and Password Protection, USB 3.1/USB 3.0 Compatible - WDBR9S0060BBK-WESN

Western DigitalAmazonSATA SSD

Capacity

6 TB

Price

$182.97

$/GB

$0.030

36

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

Western DigitalBest Buy3yrHDD
4.7(970)
250 / 250MB/s

Capacity

8 TB

Price

$244.99

$/GB

$0.031

37

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

Western DigitalBest Buy3yrHDD
4.7(1,797)

Capacity

6 TB

Price

$184.99

$/GB

$0.031

38

Seagate Portable 5TB External Hard Drive HDD – USB 3.0 for PC, Mac, PS4, & Xbox - 1-Year Rescue Service (STGX5000400), Black

SeagateAmazonHDD

Capacity

5 TB

Price

$154.35

$/GB

$0.031

39

WD - BLACK 6TB Gaming Internal Hard Drive

Western DigitalBest Buy5yrHDD
4.5(46)
256 / 256MB/s

Capacity

6 TB

Price

$189.99

$/GB

$0.032

40

Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004)

SeagateAmazonHDD

Capacity

8 TB

Price

$254.99

$/GB

$0.032

41

WD 5TB My Passport, Portable External Hard Drive, Black, backup software with defense against ransomware, and password protection, USB 3.1/USB 3.0 compatible - WDBPKJ0050BBK-WESN

Western DigitalAmazonHDD

Capacity

5 TB

Price

$159.95

$/GB

$0.032

42

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

Western DigitalBest Buy3yrHDD
4.7(2,867)

Capacity

5 TB

Price

$159.99

$/GB

$0.032

43

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)

Capacity

5 TB

Price

$159.99

$/GB

$0.032

44

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)

Capacity

5 TB

Price

$159.99

$/GB

$0.032

45

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

SeagateBest Buy1yrHDD
4.8(263)

Capacity

5 TB

Price

$159.99

$/GB

$0.032

46

ST4000NM0035 Enterprise-class 4TB SATA Monitors 4T Hard Drives

ST4000NM0035NeweggHDD

Capacity

4TB

Price

$129.60

$/GB

$0.032

47

WD 4TB My Passport, Portable External Hard Drive, Blue, backup software with defense against ransomware, and password protection, USB 3.1/USB 3.0 compatible - WDBPKJ0040BBL-WESN

Western DigitalAmazonHDD90d low

Capacity

4 TB

Price

$129.99

$/GB

$0.032

48

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)

Capacity

5 TB

Price

$164.99

$/GB

$0.033

49

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

Western DigitalBest Buy3yrHDD
4.8(466)
140 / 140MB/s

Capacity

5 TB

Price

$164.99

$/GB

$0.033

50

Dell 8TB 7.2K RPM SATA 6Gb/s 512e 3.5in Enterprise PowerEdge Hard Drive for R440 R750 R450 T150 R470 T560 T40 R250 R740 R640 T550 T350 R540 R840 ME4024 R650XS R350 R340 J7W80 G16

DellAmazon3yrHDD

Capacity

8 TB

Price

$264.64

$/GB

$0.033

51

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

SeagateAmazonHDD

Capacity

6 TB

Price

$199.00

$/GB

$0.033

52

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 DigitalAmazonHDD

Capacity

5 TB

Price

$169.99

$/GB

$0.034

53

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

Western DigitalBest Buy3yrHDD
4.7(1,166)
90d low

Capacity

4 TB

Price

$139.99

$/GB

$0.035

54

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

SeagateAmazon1yrHDD

Capacity

4 TB

Price

$139.99

$/GB

$0.035

55

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

Western DigitalBest Buy3yrHDD
4.5(547)

Capacity

4 TB

Price

$139.99

$/GB

$0.035

56

Seagate Game Drive for Xbox 5 TB External Hard Drive Portable HDD - USB 3.2 Gen 1, Black with Built-in Green LED bar, Xbox Certified, 3 Year Rescue Services(STKX5000403)

SeagateAmazon1yrHDD

Capacity

5 TB

Price

$179.99

$/GB

$0.036

57

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(508)

Capacity

5 TB

Price

$179.99

$/GB

$0.036

58

Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ

Western DigitalAmazon3yrHDD

Capacity

6 TB

Price

$216.99

$/GB

$0.036

59

Seagate Skyhawk 4TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 64MB Cache for DVR NVR Security Camera System with Drive Health Management and in-House Rescue Services (ST4000VXZ16/016)

SeagateAmazon3yrHDD

Capacity

4 TB

Price

$144.95

$/GB

$0.036

60

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

TOSHIBAAmazon1yrHDD

Capacity

4 TB

Price

$145.00

$/GB

$0.036

61

SanDisk Professional 6TB G-Drive ArmorATD - Rugged, Durable Portable External Hard Drive HDD, USB-C, USB 3.2 Gen 1 - SDPHE1G-006T-GBAND

Western DigitalAmazon3yrHDD

Capacity

6 TB

Price

$219.99

$/GB

$0.037

62

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

Western DigitalAmazon3yrHDD90d low

Capacity

5 TB

Price

$185.00

$/GB

$0.037

63

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

Western DigitalBest Buy3yrHDD
4.6(607)

Capacity

4 TB

Price

$149.99

$/GB

$0.037

64

Western Digital 8TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD8002PURP

Western DigitalAmazon5yrHDD

Capacity

8 TB

Price

$305.99

$/GB

$0.038

65

For HP 797265-B21 4TB SATA 7.2K 3.5 6G 797519-001 G9 G10 hard drive

HPNeweggHDD

Capacity

4TB

Price

$154.45

$/GB

$0.039

66

Western Digital 8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD84PURZ

Western DigitalAmazonHDD90d low

Capacity

8 TB

Price

$312.99

$/GB

$0.039

67

Seagate Barracuda ST4000LM024 4 TB 2.5" Internal Hard Drive

SeagateAmazonHDD

Capacity

4 TB

Price

$159.00

$/GB

$0.040

68

WD - My Cloud Home 4TB Personal Cloud - White

Western DigitalBest Buy2yrHDD
4.0(1,469)

Capacity

4 TB

Price

$159.99

$/GB

$0.040

69

Seagate Constellation 500 GB 7200RPM SATA 3Gb/s 32 MB Cache 2.5 Inch Internal Hard Drive - Bare Drive ST9500530NS

SeagateAmazon5yrHDD

Capacity

500 GB

Price

$20.25

$/GB

$0.041

70

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

LaCieBest Buy2yrHDD
4.7(867)

Capacity

5 TB

Price

$209.99

$/GB

$0.042

71

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

G-DRIVEBest Buy3yrHDD
4.4(90)
130 / 130MB/s

Capacity

4 TB

Price

$169.99

$/GB

$0.042

72

Seagate Exos X18 ST10000NM018G 10 TB Hard Drive - Internal - SATA (SATA-600) - Conventional Magnetic Recording (CMR) Method

SeagateNeweggHDD

Capacity

10TB

Price

$434.45

$/GB

$0.043

73

Western Digital 2TB WD Blue PC Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD20EZBX

Western DigitalAmazon2yrHDD

Capacity

2 TB

Price

$88.99

$/GB

$0.044

74

Buffalo 8 TB Hard Drive - Internal - TAA Compliant

BuffaloNeweggHDD

Capacity

8TB

Price

$358.22

$/GB

$0.045

75

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

$89.99

$/GB

$0.045

76

Seagate BarraCuda 2TB Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache – Frustration Free Packaging (ST2000DM008/ST2000DMZ08)

SeagateAmazonHDD

Capacity

2 TB

Price

$89.99

$/GB

$0.045

77

Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD44PURZ

Western DigitalAmazonHDD

Capacity

4 TB

Price

$179.99

$/GB

$0.045

78

Seagate BarraCuda 5TB Internal Hard Drive HDD – 2.5 Inch SATA 6Gb/s 5400 RPM 128MB Cache for Computer Desktop PC (ST5000LM000)

SeagateAmazonHDD

Capacity

5 TB

Price

$225.00

$/GB

$0.045

79

LaCie Rugged 5TB Portable External HDD - USB 3.0/2.0 Compatible, Shock/Dust/Rain Resistant for Mac & PC, Orange, Grey

LaCieAmazonHDD

Capacity

5 TB

Price

$227.46

$/GB

$0.045

80

WD 2TB My Passport, Portable External Hard Drive, Black, backup software with defense against ransomware, and password protection, USB 3.1/USB 3.0 compatible - WDBYVG0020BBK-WESN

Western DigitalAmazonHDD

Capacity

2 TB

Price

$94.59

$/GB

$0.047

81

WD - My Passport 2TB External USB 3.0 Portable Hard Drive - Black

Western DigitalBest Buy3yrHDD
4.7(5,079)

Capacity

2 TB

Price

$94.99

$/GB

$0.047

82

Western Digital WD Bulk WD10EURX 1TB AV GP SATA 6Gbs 3.5", 1 TB

Western DigitalAmazonHDD

Capacity

1 TB

Price

$47.99

$/GB

$0.048

83

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

84

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

TOSHIBAAmazon1yrSATA SSD

Capacity

2 TB

Price

$99.00

$/GB

$0.050

85

LaCie LAC9000298 La Cie Rugged Mini USB 3.0 / USB 2.0 External Hard Drive (9000298)

SeagateAmazon2yrHDD

Capacity

2 TB

Price

$99.95

$/GB

$0.050

86

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

87

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

SeagateBest Buy2yrHDD
4.8(105)

Capacity

2 TB

Price

$99.99

$/GB

$0.050

88

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

SeagateBest Buy1yrHDD
4.7(638)

Capacity

2 TB

Price

$99.99

$/GB

$0.050

89

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

$99.99

$/GB

$0.050

90

Western Digital Elements SE WDBEPK0020BBK-WESN 2 TB Portable Hard Drive - External - Black

Western DigitalAmazonHDD

Capacity

2 TB

Price

$99.99

$/GB

$0.050

91

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

Western DigitalBest Buy3yrHDD
4.7(1,369)

Capacity

2 TB

Price

$99.99

$/GB

$0.050

92

apricorn aegis padlock 16 tb fips 1402 validated 256bit encrypted hard drive adt3pl256f16tb

ApricornNeweggHDD

Capacity

16TB

Price

$818.99

$/GB

$0.051

93

Western Digital 3TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD30EFRX

Western DigitalAmazonHDD

Capacity

3 TB

Price

$154.99

$/GB

$0.052

94

IFLASH 1TB Portable External Hard Drive

IFLASHAmazonHDD

Capacity

1 TB

Price

$51.99

$/GB

$0.052

95

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

Western DigitalBest Buy3yrHDD
4.7(1,158)

Capacity

2 TB

Price

$104.99

$/GB

$0.052

96

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

Western DigitalBest Buy3yrHDD
4.7(751)

Capacity

2 TB

Price

$104.99

$/GB

$0.052

97

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

$27.99

$/GB

$0.056

98

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

$27.99

$/GB

$0.056

99

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

MaxoneAmazon3yrHDD

Capacity

500 GB

Price

$27.99

$/GB

$0.056

100

Western Digital 1TB WD Blue PC Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 64 MB Cache, 3.5" - WD10EZEX

Western DigitalAmazonHDD90d low

Capacity

1 TB

Price

$56.00

$/GB

$0.056

Buy Cheap Hard Drives: Find the Best Deals in 2026

Looking to buy cheap hard drives? You're in the right place. BuyPerUnit compares 884+ hard drives, SSDs, and NVMe drives 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 storage starts at just $0.006/GB, while the average across all drives is $0.036/GB. Whether you need bulk storage for backups or a fast NVMe for gaming, we help you find the best deal.

How to Buy Cheap Hard Drives (Without Getting Ripped Off)

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.

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. HDD vs SSD Tradeoff

HDDs are 2-5x cheaper per GB but much slower. Use HDDs for bulk storage (movies, backups) and SSDs for your OS and games.

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.

Cheap Hard Drives vs Cheap SSDs: Which Should You Buy?

TypeTypical $/GBSpeedBest For
HDD$0.015-0.02580-160 MB/sBulk storage, backups, media libraries
SATA SSD$0.05-0.10500-550 MB/sOS drive, general use, laptops
NVMe SSD$0.04-0.123,000-7,000 MB/sGaming, video editing, fast boot

Frequently Asked Questions About Buying Cheap Hard Drives

What is the cheapest hard drive per GB right now?
The cheapest storage per gigabyte is currently $0.0064/GB. Large capacity HDDs (6TB+) typically offer the lowest price per gigabyte, while NVMe SSDs have become increasingly affordable with many models under $0.05/GB.
Should I buy a cheap HDD or spend more on an SSD?
It depends on your use case. For bulk storage (movies, backups, archives), a cheap HDD makes sense. For your operating system, frequently used programs, and games, an SSD is worth the extra cost — the speed difference is dramatic (10-50x faster).
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.
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 cheapest reliable hard drives?
For HDDs, Seagate and Western Digital dominate the budget market. For SSDs, brands like Crucial, Kingston, Silicon Power, and TeamGroup offer excellent value. Samsung and WD Black are pricier but offer top-tier performance.

How We Find the Cheapest Hard Drives

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

Products are ranked from best value (lowest $/GB) to worst. We update prices regularly from Amazon 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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