HDD$22.78 per TB
Western Digital Internal Hard Drives 18Tb DC HC550 Surveillance,Wd 3.5 HDD Sata 6Gb/s 7200 PRM NAS 512 mb Cache for Dvr Nvr (18 TB)
- List price
- $410
- Capacity
- 18 TB
Hard drive and SSD prices
Compare hard drive and SSD prices in one place
See list price and price per terabyte for internal and external drives. Shop by size, budget, or use case below, or open the full hard drive and SSD price table to sort and filter every drive in the table.
Lowest price per terabyte
$22.78 per TB
Prices last updated .
Cheapest HDD price per terabyte
$22.78 per TB
Western Digital Internal Hard Drives 18Tb DC HC550 Surveillance,Wd 3.5 HDD Sata 6Gb/s 7200 PRM NAS 512 mb Cache for Dvr Nvr (18 TB)Cheapest SSD price per terabyte
$66.88 per TB
Micron 5200 5210 Ion 7.68 TB Solid State Drive - SATA 600-2.5" Drive - Read Intensive - 0.8 Dwpd - Internal (Renewed)Deals
Best hard drive deals
The lowest price per terabyte from Amazon list prices. Prices last updated August 14, 2026.
Cheapest hard drives and SSDs per TB
- HDD$24.55 per TB
Toshiba X300 PRO 20TB High Workload Performance for Creative Professionals 3.5-Inch Internal Hard Drive – Up to 300 TB/Year Workload Rate CMR SATA 6 Gb/s 7200 RPM 512 MB Cache - HDWR62AXZSTB (20 TB)
- List price
- $491
- Capacity
- 20 TB
- HDD$25.00 per TB
DELL THGNN 4TB 7.2K 3.5 SATA 6GBS HDD (Renewed) (4 TB)
- List price
- $100
- Capacity
- 4 TB
- HDD$26.00 per TB
Seagate BarraCuda Internal Hard Drive 8TB SATA 6Gb/s 256MB Cache 3.5-Inch (ST8000DM004),Mechanical Hard Disk (8 TB)
- List price
- $208
- Capacity
- 8 TB
- HDD$26.92 per TB
Seagate Expansion 12TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP12000400) (12 TB)
- List price
- $323
- Capacity
- 12 TB
- HDD$27.00 per TB
Seagate Expansion 10TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP10000402) (10 TB)
- List price
- $270
- Capacity
- 10 TB
- HDD$27.78 per TB
Seagate IronWolf Pro 18TB NAS HDD, ST18000NE000 SATA 6Gb/s 3.5" (Renewed) (18 TB)
- List price
- $500
- Capacity
- 18 TB
- HDD$27.81 per TB
Seagate 16TB 7200RPM HDD (16 TB)
- List price
- $445
- Capacity
- 16 TB
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Find hard drive and SSD prices
Open the full comparison table or narrow by drive type, size, brand, and use case.
Compare all hard drive and SSD pricesSort, filter, and compare price per terabyte
HDD pricesSpinning disks with the lowest cost per terabyte
SSD and NVMe pricesInternal, external, and M.2 solid-state drives
Shop by sizeCompare HDD and SSD prices from 128 GB to 20 TB
Best hard drives for NAS, CCTV and gamingBuying guides for NAS, CCTV and gaming drives
Cheapest drives by budgetHard drives under $50, $100, $200, and more
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Drive details by modelSpecs and prices for each hard drive and SSD model
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Hard drive prices by size (128 GB to 20 TB)
Each size page groups similar capacities so you can compare HDD and SSD prices for that size.
Buying guides
Best hard drive buying guides
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- Best hard drives for NAS in 2026
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How our prices work
Prices are Amazon list prices. Prices are in US dollars for the exact model shown. Prices last updated . Checkout totals, coupons, and tax can differ from the list price in our table.
Many Amazon links are affiliate links. We may earn a commission on qualifying purchases at no extra cost to you.
Shop smarter
How to choose a hard drive or SSD
HDD vs SSD vs NVMe: HDDs trade speed for the lowest cost per terabyte. SATA SSDs speed up boot and apps. NVMe (usually M.2) SSDs are faster still, which helps with games and large video files.
Price per terabyte: Divide price by capacity in terabytes to compare unlike sizes. Our tables sort on this by default on the full price comparison table.
CMR vs SMR: We do not label recording technology on every row. For NAS or RAID, prefer drives marketed for NAS or surveillance; see our NAS hard drive guide for CMR-focused advice.
Condition & warranty: Use the condition and warranty columns in the full table. Renewed or refurbished units can be fine for secondary backups but are a weaker choice for primary storage.
Hard drive price FAQ
What does Hard Drive Prices do?
We compare internal and external hard drive and SSD prices, show list price and price per terabyte in one place, and link you to Amazon when you are ready to buy. Open /all-drives for the full sortable table.
How often are prices updated?
Prices were last updated on August 14, 2026. We show Amazon list prices. Checkout prices on Amazon can change at any time and may not match what you see here.
How is price per terabyte calculated?
We divide the list price by capacity in terabytes (gigabytes ÷ 1024). Sorting by price per terabyte helps compare different sizes; a higher-capacity drive is not always the best value.
Do you earn money from links?
Yes. Many Amazon links are affiliate links. We may earn a commission on qualifying purchases at no extra cost to you. That does not change the list prices we display.
Should I buy HDD or SSD?
HDDs usually cost less per terabyte and suit backups, NAS pools, and large media libraries. SSDs cost more per terabyte but feel much faster for boot drives, games, and video editing projects. NVMe SSDs are a fast subset of SSDs, often in M.2 form.
Are refurbished or renewed drives worth it?
They can save money, but they have been used before and may have shorter remaining life. Check warranty length, seller reputation, and whether the condition column in our table shows New vs Renewed before you rely on a drive for irreplaceable data.
Where can I compare a specific size?
Use our hard drive prices by size pages (for example 1 TB, 4 TB, or 8 TB), or open /all-drives and filter by capacity and drive type.