Seagate Exos 18TB — Price Guide & Live Deals
Live US deals on the Seagate Exos 18TB enterprise hard drive: used, refurbished and new eBay asking prices, and what to check before you buy.
Right now: Used prices roughly flat over 90 days, 8 current qualifying listings.
Current qualifying listings
As an eBay Partner, CresvaMent may be compensated if you make a purchase through the eBay links on this page. CresvaMent is not affiliated with eBay.
Seagate Exos X20 18TB Enterprise HDD ST18000NM003D SATA 3.5" 7200RPM Low Hours
$450.00 USD
Free shipping
★ 100% · 351 ratings
Listed today · checked 2h ago
SEAGATE EXOS ENTERPRISE X18 18TB SAS Hard Drive ST18000NM
$475.00 USD
+$10.00 shipping
★ 98.9% · 1,779 ratings
Listed today · checked 6h ago
Seagate 3.5" Exos x18 18TB SATA III 6Gbps HDD 2TV103-001
$399.99 USD
Free shipping
★ 99.7% · 994 ratings
Listed today · checked 5h ago
Seagate Exos X18 18TB 3.5" Enterprise SATA 6Gb/s Hard Drive - Preowned & Tested
$429.00 USD
Free shipping
★ 100% · 1,899 ratings
Listed today · checked 5h ago
18TB Seagate Exos X20 Hard Drive 3.5 SATA III HDD Enterprise HDD
$399.00 USD
Shipping calculated
★ 100% · 121 ratings
Listed today · checked 5h ago
Seagate Exos X18 18TB ST18000NM005J 7.2K RPM SAS 12Gb/s 512e 3.5" SED Hard Drive
$535.00 USD
Free shipping
★ 99.9% · 17,623 ratings
Listed 5 days ago · checked 5h ago
Seagate Exos X18 18TB SATA Hard Drive ST18000NM014J GRADE B
$339.00 USD
Shipping calculated
★ 100% · 234 ratings
Listed 6 days ago · checked 5h ago
18TB SATA Seagate Exos X18 3.5" CMR 7.2K RPM 6Gbps 256MB Enterprise Hard Drive
$479.00 USD
Free shipping
★ 99.9% · 6,323 ratings
Listed 7 days ago · checked 5h ago
Roughly one qualifying listing every 2.5 days.
Asking-price ranges by condition
| Condition | Min | 25% | Median | 75% | Max | N |
|---|---|---|---|---|---|---|
| Used | $339.00 | $399.00 | $429.00 | $479.00 | $499.00 | 7 |
| RefurbishedLow sample size | $535.00 | $535.00 | $535.00 | $535.00 | $535.00 | 1 |
| NewLow sample size | $420.00 | $420.00 | $420.00 | $420.00 | $420.00 | 1 |
Asking prices of currently-active listings. Not sold-price data. Rows marked "low sample size" have fewer than 5 listings, so one outlier can move them a lot.
Full asking-price history by condition →
Is this a good price?
Enter a price to see where it falls among current Used asking prices for Seagate Exos 18TB.
How we filter
Every feed has its own filter, tuned by hand for this one part. Before any change goes live, those filters are tested against thousands of real eBay listing titles. Every night, each feed is checked against every other deal page in its category, so a listing for a different part that slips in gets flagged and fixed instead of quietly shown.
Of the 28 listings we observed for this game in the last 30 days, we filtered out 17 of 28 (~61%) for quality reasons. The remaining 11 are what we'd actually surface.
- 5 priced below our floor (too good to be true)
- 4 priced above the curated ceiling
- 3 shipped from a region we exclude
- 2 seller had too few feedback ratings
- 1 wrong condition (e.g. parts-only)
- 1 matched a bootleg / out-of-scope keyword
- 1 seller positive-feedback percentage too low
What the feed excludes
An eBay search for Seagate Exos 18TB returns far more than the part itself: laptop chips, mining rigs, coolers, empty boxes and whole PCs all mention it in their titles. These are the 41 terms we filter out to keep this feed to the real thing. A listing whose title contains any of them never reaches the feed, the price table or an alert. Many look unrelated to Seagate Exos 18TB because they are: that's the noise.
Other models & look-alikes 29
- -caddy
- -sled
- -screw
- -screws
- -cloning kit
- -decal
- -combo
- -with ram
- -2pcs
- -3pcs
- -4pcs
- -5pcs
- -6pcs
- -8pcs
- -10pcs
- -read description
- -see description
- -mach.2
- -mach2
- -2x18
- -qnap
- -ubiquiti
- -synology
- -nas enclosure
- -diskless
- -replacement part
- -stand
- -mug
- -bay
Broken, untested & empty listings 4
- -as-is
- -untested
- -not tested
- -dead
Laptops & other form factors 1
- -workstation pc
Lots & multi-item listings 1
- -bundle
Accessories, merch & paper 6
- -bracket
- -cable
- -adapter
- -enclosure only
- -tray only
- -sticker
How often qualifying deals appear
- 6 in the last 7 days (~0.86/day)
- 12 in the last 30 days (~0.4/day)
- 12 in the last 90 days (~0.13/day)
Exos 18TB: buyer & reseller spec sheet
SKU identity. This feed covers 3.5" Seagate Exos drives sold as 18TB, which includes the Exos X18 and the later Exos X20 at that capacity. Part numbers beginning ST18000NM are Seagate's 18TB models, and the letters at the end separate variants. Confirm the interface (SATA or SAS) from the part number or label photo, not the title: a SAS drive needs an HBA or SAS-capable backplane and will not work on a plain SATA port.
Variants & value impact. SATA and SAS versions, self-encrypting (SED) models, and OEM-labelled units (Dell, HP) of the same drive are listed side by side, and asking prices differ between them. Treat the label photo as the source of truth for the exact part number.
Traps. The dual-actuator Exos 2X18 (MACH.2) also carries an 18TB label but is a different drive, so this feed leaves it out. Whole NAS units listed with Exos drives inside are filtered out too, since they are not single drives.
Buying a used SSD: what to check
These checks apply to every drive on our storage pages. The item notes above cover what is specific to this drive.
Used
- Ask for a screenshot of the drive's health readout (SMART data): health percentage, total data written and power-on hours.
- Confirm the reported capacity matches the label. Fake high-capacity drives exist.
- Ask whether it was wiped. You should wipe it again yourself either way.
Refurbished
- Find out the warranty and whether the health readout was reset or replaced.
New
- Check the box is sealed and register the serial for warranty as soon as it arrives.
FAQ
How much is Seagate Exos 18TB worth right now?
How do I get notified when a new Seagate Exos 18TB listing comes in under my price?
How often do qualifying deals appear?
Is Seagate Exos 18TB reproduced or commonly faked?
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Data freshness: last snapshot 2026-11-06 00:00 UTC . Atom feed