$/
BuyPerUnit

Hard Drives & SSDs

Ranked by price per gigabyte. Best value first.

Best Value

$0.018/GB

Average

$0.034/GB

Highest

$0.085/GB

Products

67

Filter:AllNVMeSATA SSDHDD
Capacity
1

Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black

SeagateBest BuyHDD
4.4(225)

Capacity

20 TB

Price

$349.99

$/TB

$17.50

$/GB

$0.018

2

Seagate BarraCuda 6TB Internal HDD

SeagateAmazonHDD

Capacity

6 TB

Price

$109.99

$/TB

$18.33

$/GB

$0.018

3

Seagate IronWolf 8TB NAS HDD

SeagateAmazonHDD

Capacity

8 TB

Price

$149.99

$/TB

$18.75

$/GB

$0.019

4

Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black

SeagateBest BuyHDD
4.3(106)

Capacity

16 TB

Price

$299.99

$/TB

$18.75

$/GB

$0.019

5

Seagate BarraCuda 4TB Internal HDD

SeagateAmazonHDD

Capacity

4 TB

Price

$79.99

$/TB

$20.00

$/GB

$0.020

6

WD Blue 4TB Desktop HDD

Western DigitalAmazonHDD

Capacity

4 TB

Price

$79.99

$/TB

$20.00

$/GB

$0.020

7

WD Red Plus 8TB NAS HDD

Western DigitalAmazonHDD

Capacity

8 TB

Price

$169.99

$/TB

$21.25

$/GB

$0.021

8

Seagate - Barracuda 8TB Internal Hard Drive for Desktops

SeagateBest BuyHDD
4.6(393)

Capacity

8 TB

Price

$169.99

$/TB

$21.25

$/GB

$0.021

9

WD - Blue 6TB PC Internal Hard Drive for Desktops

WDBest BuyHDD
4.5(96)

Capacity

6 TB

Price

$129.99

$/TB

$21.66

$/GB

$0.022

10

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

WDBest BuyHDD
4.5(746)

Capacity

18 TB

Price

$389.99

$/TB

$21.67

$/GB

$0.022

11

Seagate - IronWolf Pro 16TB NAS Internal Hard Drive with Rescue Data Recovery Services

SeagateBest BuyHDD
4.6(7)

Capacity

16 TB

Price

$349.99

$/TB

$21.87

$/GB

$0.022

12

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

WDBest BuyHDD
4.6(264)

Capacity

20 TB

Price

$439.99

$/TB

$22.00

$/GB

$0.022

13

Seagate - IronWolf Pro 24TB NAS Internal Hard Drive with Rescue Data Recovery Services

SeagateBest BuyHDD
5.0(4)

Capacity

24 TB

Price

$529.99

$/TB

$22.08

$/GB

$0.022

14

Seagate IronWolf 4TB NAS HDD

SeagateAmazonHDD

Capacity

4 TB

Price

$89.99

$/TB

$22.50

$/GB

$0.022

15

WD Elements 5TB Portable HDD

Western DigitalAmazonHDD

Capacity

5 TB

Price

$114.99

$/TB

$23.00

$/GB

$0.023

16

WD Red Plus 6TB NAS HDD

Western DigitalAmazonHDD

Capacity

6 TB

Price

$139.99

$/TB

$23.33

$/GB

$0.023

17

WD Elements 4TB Portable HDD

Western DigitalAmazonHDD

Capacity

4 TB

Price

$94.99

$/TB

$23.75

$/GB

$0.024

18

WD Red Plus 4TB NAS HDD

Western DigitalAmazonHDD

Capacity

4 TB

Price

$94.99

$/TB

$23.75

$/GB

$0.024

19

WD - Blue 8TB PC Internal Hard Drive for Desktops

WDBest BuyHDD
4.2(16)

Capacity

8 TB

Price

$189.99

$/TB

$23.75

$/GB

$0.024

20

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

WDBest BuyHDD
4.7(7,182)

Capacity

8 TB

Price

$189.99

$/TB

$23.75

$/GB

$0.024

21

Seagate Portable 5TB External HDD

SeagateAmazonHDD

Capacity

5 TB

Price

$119.99

$/TB

$24.00

$/GB

$0.024

22

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

WDBest BuyHDD
4.7(956)

Capacity

8 TB

Price

$194.99

$/TB

$24.37

$/GB

$0.024

23

Seagate Portable 4TB External HDD

SeagateAmazonHDD

Capacity

4 TB

Price

$99.99

$/TB

$25.00

$/GB

$0.025

24

Toshiba Canvio Advance 4TB Portable HDD

ToshibaAmazonHDD

Capacity

4 TB

Price

$99.99

$/TB

$25.00

$/GB

$0.025

25

WD - Blue 4TB PC Internal Hard Drive for Desktops

WDBest BuyHDD
4.7(1,950)

Capacity

4 TB

Price

$99.99

$/TB

$25.00

$/GB

$0.025

26

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)

Capacity

8 TB

Price

$199.99

$/TB

$25.00

$/GB

$0.025

27

WD - BLACK 8TB Gaming Internal Hard Drive

WDBest BuyHDD
4.8(4)

Capacity

8 TB

Price

$209.99

$/TB

$26.25

$/GB

$0.026

28

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

WDBest BuyHDD
4.7(42)

Capacity

12 TB

Price

$319.99

$/TB

$26.67

$/GB

$0.027

29

WD - Purple 8TB Surveillance Internal Hard Drive

WDBest BuyHDD
4.6(10)

Capacity

8 TB

Price

$214.99

$/TB

$26.87

$/GB

$0.027

30

WD - Red Plus 8TB NAS Internal Hard Drive

WDBest BuyHDD
4.8(55)

Capacity

8 TB

Price

$214.99

$/TB

$26.87

$/GB

$0.027

31

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

WDBest BuyHDD
4.7(11,952)

Capacity

5 TB

Price

$134.99

$/TB

$27.00

$/GB

$0.027

32

Seagate BarraCuda 2TB Internal HDD

SeagateAmazonHDD

Capacity

2 TB

Price

$54.99

$/TB

$27.49

$/GB

$0.027

33

WD Blue 2TB Desktop HDD

Western DigitalAmazonHDD

Capacity

2 TB

Price

$54.99

$/TB

$27.49

$/GB

$0.027

34

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

WDBest BuyHDD
4.7(80)

Capacity

6 TB

Price

$174.99

$/TB

$29.16

$/GB

$0.029

35

Seagate IronWolf Pro 4TB NAS HDD

SeagateAmazonHDD

Capacity

4 TB

Price

$119.99

$/TB

$30.00

$/GB

$0.030

36

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

SeagateBest BuyHDD
4.8(235)

Capacity

5 TB

Price

$149.99

$/TB

$30.00

$/GB

$0.030

37

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

WDBest BuyHDD
4.7(824)

Capacity

6 TB

Price

$184.99

$/TB

$30.83

$/GB

$0.031

38

WD - BLACK 6TB Gaming Internal Hard Drive

WDBest BuyHDD
4.6(34)

Capacity

6 TB

Price

$189.99

$/TB

$31.66

$/GB

$0.032

39

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

WDBest BuyHDD
4.7(2,850)

Capacity

5 TB

Price

$159.99

$/TB

$32.00

$/GB

$0.032

40

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

$/TB

$32.00

$/GB

$0.032

41

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

$/TB

$32.00

$/GB

$0.032

42

Seagate Portable 2TB External HDD

SeagateAmazonHDD

Capacity

2 TB

Price

$64.99

$/TB

$32.50

$/GB

$0.032

43

WD Elements 2TB Portable HDD

Western DigitalAmazonHDD

Capacity

2 TB

Price

$64.99

$/TB

$32.50

$/GB

$0.032

44

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

WDBest BuyHDD
4.7(473)

Capacity

5 TB

Price

$164.99

$/TB

$33.00

$/GB

$0.033

45

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

WDBest BuyHDD
4.8(456)

Capacity

5 TB

Price

$164.99

$/TB

$33.00

$/GB

$0.033

46

Seagate - One Touch with Password 4TB External USB 3.0 Portable Hard Drive with Rescue Data Recovery Services - Black

SeagateBest BuyHDD
5.0(4)

Capacity

4 TB

Price

$134.99

$/TB

$33.75

$/GB

$0.034

47

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

LaCieBest BuyHDD
4.6(854)

Capacity

5 TB

Price

$169.99

$/TB

$34.00

$/GB

$0.034

48

Toshiba Canvio Advance 2TB Portable HDD

ToshibaAmazonHDD

Capacity

2 TB

Price

$69.99

$/TB

$34.99

$/GB

$0.035

49

Seagate - Barracuda 2TB Internal Hard Drive for Desktops

SeagateBest BuyHDD
4.7(1,160)

Capacity

2 TB

Price

$69.99

$/TB

$34.99

$/GB

$0.035

50

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

SanDisk ProfessionalBest BuyHDD
4.5(86)

Capacity

4 TB

Price

$144.99

$/TB

$36.25

$/GB

$0.036

51

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

WDBest BuyHDD
4.7(1,159)

Capacity

4 TB

Price

$154.99

$/TB

$38.75

$/GB

$0.039

52

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

SeagateBest BuyHDD
4.8(103)

Capacity

2 TB

Price

$79.99

$/TB

$40.00

$/GB

$0.040

53

WD Blue 1TB Desktop HDD

Western DigitalAmazonHDD

Capacity

1 TB

Price

$44.99

$/TB

$44.99

$/GB

$0.045

54

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

SeagateBest BuyHDD
4.7(572)

Capacity

2 TB

Price

$89.99

$/TB

$44.99

$/GB

$0.045

55

WD - P10 2TB External USB 3.2 Gen 1 Portable Hard Drive - Black

WDBest BuyHDD
4.9(14)

Capacity

2 TB

Price

$89.99

$/TB

$44.99

$/GB

$0.045

56

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

WDBest BuyHDD
4.7(5,055)

Capacity

2 TB

Price

$94.99

$/TB

$47.50

$/GB

$0.047

57

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

WDBest BuyHDD
4.7(1,140)

Capacity

2 TB

Price

$94.99

$/TB

$47.50

$/GB

$0.047

58

WD Elements 1TB Portable HDD

Western DigitalAmazonHDD

Capacity

1 TB

Price

$49.99

$/TB

$49.99

$/GB

$0.050

59

Toshiba Canvio Advance 1TB Portable HDD

ToshibaAmazonHDD

Capacity

1 TB

Price

$49.99

$/TB

$49.99

$/GB

$0.050

60

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

$/TB

$49.99

$/GB

$0.050

61

Seagate - Game Drive for PlayStation Consoles 2TB External USB 3.2 Gen 1 Portable Hard Drive with Blue LED Lighting - White

SeagateBest BuyHDD
4.7(614)

Capacity

2 TB

Price

$99.99

$/TB

$49.99

$/GB

$0.050

62

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

LaCieBest BuyHDD
4.7(989)

Capacity

2 TB

Price

$104.99

$/TB

$52.49

$/GB

$0.052

63

Seagate Portable 1TB External HDD

SeagateAmazonHDD

Capacity

1 TB

Price

$54.99

$/TB

$54.99

$/GB

$0.055

64

SanDisk Professional - G-DRIVE ArmorATD 2TB External USB-C Portable Hard Drive - Space Gray

SanDisk ProfessionalBest BuyHDD
4.9(13)

Capacity

2 TB

Price

$119.99

$/TB

$59.99

$/GB

$0.060

65

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

WDBest BuyHDD
4.7(13,628)

Capacity

1 TB

Price

$79.99

$/TB

$79.99

$/GB

$0.080

66

WD - My Passport 1TB External USB 3.0 Portable Hard Drive - Black

WDBest BuyHDD
4.7(2,617)

Capacity

1 TB

Price

$84.99

$/TB

$84.99

$/GB

$0.085

67

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

LaCieBest BuyHDD
4.7(65)

Capacity

1 TB

Price

$84.99

$/TB

$84.99

$/GB

$0.085

Buy Cheap Hard Drives: Find the Best Deals in 2026

Looking to buy cheap hard drives? You're in the right place. BuyPerUnit compares 67+ 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 $0.018/GB, while the average across all drives is $0.034/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 $0.0175/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.