Cheapest HDD per TB: new and used offers
Compare recently checked US Amazon offers for hard drives, sorted by decimal price per TB. The first row has the lowest capacity cost among the matching listings we track. Check condition and compatibility before buying.
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10 offers by price per TB
See all 444 listingsWe found 444 recently priced Hard Drives (new), showing the top 10 by price per TB. Prices start at $145.00, with the lowest price per TB currently at $26.67/TB.
| # | Product | Capacity | Condition | Price / TB | Price | Region | |
|---|---|---|---|---|---|---|---|
| 1 |
HGST, a Western Digital Company Ultrastar 7K6000 6000GB 7200RPM SATA 512E Ultra ISE 128MB Cache 3.5-Inch Internal Bare or OEM Drives 0F23001
Internal 3.5"HDD
Listed warranty: 60 months · verify seller
Price checked Oct 28, 2026 13:11 UTC
|
6 TB | New | $26.67 /TB | $159.99 | us | Amazon ↗ |
| 2 |
HGST Ultrastar He8 Helium 6TB 3.5-Inch 7200RPM SATA ULTRA 512e SE 128MB Cache Internal Bare or OEM Hard Drive - HUH728060ALE604 / 0F23669
Internal 3.5"HDD
Listed warranty: 60 months · verify seller
Price checked Oct 28, 2026 13:11 UTC
|
6 TB | New | $27.33 /TB | $164.00 | us | Amazon ↗ |
| 3 |
HGST Ultrastar 7K6000 HUS726060ALE610 0F23001 6TB 7200 RPM SATA 3.5" 512E ISE 128MB Cache Enterprise Hard Drive
Internal 3.5"HDD
Price checked Oct 28, 2026 13:11 UTC
|
6 TB | New | $31.67 /TB | $189.99 | us | Amazon ↗ |
| 4 |
Seagate ST6000NM0024 6TB 7.2K SATA 3.5" HDD
3.5"HDD
Price checked Oct 28, 2026 13:08 UTC
|
6 TB | New | $31.67 /TB | $189.99 | us | Amazon ↗ |
| 5 |
Toshiba MG04ACA600E 6TB 3.5" SATA 6GBPS Enterprise HDD
3.5"HDD
Price checked Oct 28, 2026 14:29 UTC
|
6 TB | New | $31.67 /TB | $189.99 | us | Amazon ↗ |
| 6 |
WD 6TB 3.5" AE Datacenter Archive SATA III 64 MB Cache Enterprise Hard Drive (WD6001F4PZ)
3.5"HDD
Price checked Oct 28, 2026 13:06 UTC
|
6 TB | New | $33.33 /TB | $199.99 | us | Amazon ↗ |
| 7 |
BUFFALO Replacement Spare Hard Drive 20TB NAS-Grade for TeraStation 2/4/8 Bay (OP-HD20.0N)
Internal 3.5"HDD
Listed warranty: 36 months · verify seller
Price checked Oct 28, 2026 05:52 UTC
|
20 TB | New | $34.95 /TB | $698.99 | us | Amazon ↗ |
| 8 |
Seagate 8TB BarraCuda Internal Hard Drive | SATA 6 Gb/s (ST8000DM004)
Internal 3.5"HDD
Listed warranty: 24 months · verify seller
ST8000DM004 specifications →
Price checked Oct 28, 2026 13:11 UTC
|
8 TB | New | $35.00 /TB | $279.99 | us | Amazon ↗ |
| 9 |
Toshiba MG04ACA400N - Toshiba 4TB 3.5" SATA 7.2K 6Gb/s Hard Drive
3.5"HDD
Price checked Oct 28, 2026 14:29 UTC
|
4 TB | New | $36.25 /TB | $145.00 | us | Amazon ↗ |
| 10 |
Seagate Exos X14 ST12000NM0008 12 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
3.5"HDD
Price checked Oct 28, 2026 14:31 UTC
|
12 TB | New | $37.50 /TB | $449.99 | us | Amazon ↗ |
What to Check Before Buying
Check CMR or SMR for the exact model. For a NAS or sustained writes, start with your enclosure's compatibility list and workload requirements.
A manufacturer's specification describes an eligible new drive. OEM, bulk and renewed offers may have different seller or manufacturer coverage.
Confirm SATA versus SAS, drive dimensions, supported bays and the model-specific workload rating before buying.
Account for formatting, redundancy and free space. A mirror uses two drives to provide approximately one drive's capacity; it does not replace an independent backup.
Frequently Asked Questions
Which hard drive has the lowest price per TB?
Does a new hard drive remove the need for backups?
Can I use any large HDD in a NAS?
Sources and further reading
Narrow your shortlist by capacity and condition
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