sata hdd
SATA hard drives by cost per terabyte
The default choice for NAS and homelab builds — no HBA required, and every drive listed here is CMR. Nearline SATA (Exos, Ultrastar, MG) is rated for 550TB/yr and 24/7 duty; the NAS lines trade some of that rating for lower noise and power, and are ranked on their own on the NAS page.
As of 16 October 2026, the lowest cost per TB for SATA hard drives is $14.17/TB: the Seagate Exos X12 12TB SATA, used, at $170.00 delivered (price plus shipping), from eBay. How this is calculated.
Models tracked
140
best $/TB
$14.17
average $/TB
$27.61
price-drop alerts
| Drive | Cond. | Buy | |||
|---|---|---|---|---|---|
| 12TB | Used | $170.00 | $14.17 | Buy → | |
WD Ultrastar DC HC510 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 8TB | Used | $125.00 | $15.63 | Buy → |
| 10TB | Used | $159.90 | $15.99 | Buy → | |
| 14TB | Refurb | $230.99 | $16.50 | Buy → | |
HGST Ultrastar 7K4000 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 3TB | Used | $50.00 | $16.67 | Buy → |
| 2TB | Used | $34.99 | $17.50 | Buy → | |
| 2TB | Used | $35.00 | $17.50 | Buy → | |
| 4TB | Used | $70.00 | $17.50 | Buy → | |
| 8TB | Used | $139.99 | $17.50 | Buy → | |
| 6TB | Used | $107.00 | $17.83 | Buy → | |
WD Ultrastar DC HC560 WUH722020ALE6L4 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 20TB | Used | $358.00 | $17.90 | Buy → |
| 500GB | Used | $8.99 | $17.98 | Buy → | |
| 6TB | Used | $109.99 | $18.33 | Buy → | |
| 3TB | Used | $55.05 | $18.35 | Buy → | |
HGST Ultrastar He8 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 8TB | Used | $149.00 | $18.63 | Buy → |
| 6TB | Used | $113.99 | $19.00 | Buy → | |
| 14TB | Used | $275.00 | $19.64 | Buy → | |
| 20TB | Used | $394.99 | $19.75 | Buy → | |
HGST Ultrastar 7K4000 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 4TB | Used | $79.90 | $19.98 | Buy → |
Seagate Exos X10 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 10TB | Used | $199.99 | $20.00 | Buy → |
| 16TB | Used | $320.00 | $20.00 | Buy → | |
Seagate Exos 7E8 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 2TB | Used | $39.99 | $20.00 | Buy → |
| 10TB | Used | $200.00 | $20.00 | Buy → | |
| 10TB | Used | $199.99 | $20.00 | Buy → | |
Seagate Exos X18 ST18000NM000J Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 18TB | Used | $364.78 | $20.27 | Buy → |
| 16TB | Used | $327.00 | $20.44 | Buy → | |
| 4TB | Used | $82.90 | $20.73 | Buy → | |
| 12TB | Used | $250.00 | $20.83 | Buy → | |
| 12TB | Used | $249.91 | $20.83 | Buy → | |
Seagate IronWolf Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 12TB | Used | $250.00 | $20.83 | Buy → |
| 12TB | Used | $249.99 | $20.83 | Buy → | |
| 6TB | Used | $124.99 | $20.83 | Buy → | |
Seagate IronWolf Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 4TB | Used | $85.99 | $21.50 | Buy → |
| 6TB | Used | $129.90 | $21.65 | Buy → | |
| 16TB | Used | $349.00 | $21.81 | Buy → | |
WD Gold Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 4TB | Used | $87.50 | $21.88 | Buy → |
| 18TB | Used | $394.99 | $21.94 | Buy → | |
| 10TB | Used | $219.99 | $22.00 | Buy → | |
| 10TB | Used | $220.00 | $22.00 | Buy → | |
| 10TB | Used | $219.99 | $22.00 | Buy → | |
| 18TB | Used | $397.00 | $22.06 | Buy → | |
| 18TB | Used | $400.00 | $22.22 | Buy → | |
| 10TB | Used | $225.00 | $22.50 | Buy → | |
| 6TB | Used | $135.00 | $22.50 | Buy → | |
| 8TB | Used | $183.98 | $23.00 | Buy → | |
| 14TB | Used | $324.99 | $23.21 | Buy → | |
| 12TB | Used | $285.67 | $23.81 | Buy → | |
Seagate IronWolf Pro Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 6TB | Used | $145.00 | $24.17 | Buy → |
| 16TB | Used | $389.00 | $24.31 | Buy → | |
| 10TB | Used | $245.00 | $24.50 | Buy → | |
| 4TB | Used | $98.95 | $24.74 | Buy → | |
| 22TB | Used | $544.78 | $24.76 | Buy → | |
| 8TB | Used | $199.00 | $24.88 | Buy → | |
| 12TB | Used | $299.00 | $24.92 | Buy → | |
WD Red Plus Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 12TB | Used | $299.00 | $24.92 | Buy → |
| 16TB | Used | $399.00 | $24.94 | Buy → | |
| 16TB | Used | $399.00 | $24.94 | Buy → | |
HGST Ultrastar 7K4000 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 2TB | Used | $50.00 | $25.00 | Buy → |
Seagate Exos 7E10 Listing identity unconfirmed. We cannot confirm this listing is exactly this model, so we do not rate it. | 2TB | Used | $50.00 | $25.00 | Buy → |
| 8TB | Used | $199.99 | $25.00 | Buy → |
prices last checked 2026-10-16 14:07 UTC
Some “Buy” links earn us a commission. Ranking is by cost per terabyte only and is never affected — who pays us.