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18 TB hard drive prices

Every 18 TB internal hard drive listing we found on eBay, ranked by price per terabyte including shipping: SATA and SAS, new, refurbished and used. Updated Oct 11, 2026 12:41 UTC.

Cheapest used SATA, per TB$18.05

Cheapest new SATA, per TB$25.56

Cheapest SAS, per TB$19.39

$/TB	Price	Shipping	Capacity	Size	Condition	Listing
$18.05	$324.99	free	18 TB	3.5″	Used	Western Digital WD 3.5" Enterprise 18TB SATA III 6Gbps HDD WD180EDFZ
$18.33	$329.99	free	18 TB		Used	Western Digital Wuh721818ALE6l4 18TB HDD Wont Read
$19.39	$339.00	+ ship	18 TB	3.5″	Used	Seagate White Label ST18000NM014J 3.5" 7200RPM 18TB SATA HDD Drive · 4 available
$19.51	$2,799.00	+ ship	18 TB ×8	3.5″	Used	Lot of 8 Seagate Exos X18 18TB 7200 SATA 6Gb/s 3.5" Enterprise Hard Drives
$19.94	$359.00	free	18 TB	3.5″	Refurb	18TB SATA Seagate Exos X18 (ST18000NM000J) 7.2K RPM 6Gb/s 3.5" Recertified HDD
$20.00	$349.99	+ ship	18 TB		Used	Western Digital 18TB SATA WD180EDGZ
$20.00	$350.00	+ ship	18 TB	3.5″	Used	Western Digital 18TB, Internal, 7200 RPM, 3.5 inch DC Hard Disk Drive
$20.26	$364.65	free	18 TB		Used	WD 18TB WD180EDGZ-11B2DA0 SATA HDD 3992-4416 Hours Short SMART Passed
$20.26	$364.65	free	18 TB		Used	WD 18TB WD180EDGZ-11B2DA0 SATA HDD 8195-8560 Hours Short SMART Passed
$20.50	$369.00	free	18 TB	3.5″	Used	Seagate Ironwolf Pro 18TB ST18000NT001 7.2K RPM SATA 6Gb/s 512e 3.5" HDD
$20.50	$359.00	+ ship	18 TB	3.5″	Used	18TB SATA ST18000NM000J 3.5" Exos X18 Seagate Enterprise Hard Drive
$21.11	$370.00	+ ship	18 TB	3.5″	Used	Seagate Exos X18 18TB, Internal, 7200RPM, 3.5" (ST18000NM000J) Hard Drive
$21.11	$380.00	$12.00	18 TB	3.5″	Used	Western Digital 18TB 3.5" SATA 6Gb/s 7200RPM 512MB WD180EDGZ-11B2DA0 HDD
$21.33	$384.00	free	18 TB	3.5″	Used	Seagate Exos X18 18TB, Internal, 7200RPM, 3.5" (ST18000NM000J) SATA HHD Enterpri
$21.61	$389.00	free	18 TB	3.5″	Used	18TB SATA ST18000NM014J 3.5" Exos X18 Seagate Enterprise Hard Drive
$21.67	$380.00	+ ship	18 TB	3.5″	Used	Seagate Exos X18 18TB Enterprise HDD ST18000NM000J 3.5" SATA 7200RPM Hard Drive
$21.94	$395.00	free	18 TB	3.5″	Used	Seagate 18TB Exos X18 7.2K SATA 3.5" Hard Drive HDD ST18000NM000J - 96% Health
$22.22	$399.95	free	18 TB	3.5″	Used	Minor Dings Working Seagate ST18000NM000J 18tb EXOS 7.2K SATA 3.5",https://i.ibb
$22.22	$400.00	free	18 TB	3.5″	Used	Seagate Exos X18 18TB 7200 SATA 6Gb/s 3.5" Enterprise Hard Drive - ST18000NM000J
$22.22	$400.00	free	18 TB		Used	Western Digital Ultrastar DC HC550 18tb \| WUH721818ALN604
$22.61	$397.00	+ ship	18 TB	3.5″	Used	Seagate IronWolf Pro 18TB NAS HDD ST18000NE000 SATA 6Gb/s 3.5in Used
$22.72	$399.00	+ ship	18 TB		Used	Dell Seagate Exos X18 18TB SATA 3.5 HDD ST18000NM002J
$22.78	$409.99	free	18 TB		Used	18TB Seagate Exos X20 Hard Drive 3.5 SATA III HDD Enterprise HDD
$22.78	$399.99	+ ship	18 TB		Used	Dell Seagate Exos X18 18TB SATA 3.5 HDD ST18000NM002J
$22.78	$399.99	+ ship	18 TB	3.5″	Used	Seagate Exos X20 (7200RPM, 3.5", SATA III) 18TB Internal Hard Drive -... · 2 available
$22.78	$399.99	+ ship	18 TB	3.5″	Used	Seagate Exos X20 18TB 7200 SATA 6Gb/s 3.5" Enterprise Hard Drive - ST18000NM003D
$22.78	$400.00	+ ship	18 TB	3.5″	Used	Seagate Exos X20 ST18000NM003D 18TB 512E SATA 6Gb/s 3.5" Enterprise Hard Drive
$23.22	$418.00	free	18 TB	3.5″	Used	Seagate IronWolf Pro 18TB 7200RPM SATA 6Gb/s 3.5" NAS Hard Drive - 6092 hours
$23.28	$419.00	free	18 TB	3.5″	Used	Seagate IronWolf Pro 18TB ST18000NE000 7.2K SATA 6Gb/s 512e 3.5" Enterprise HDD
$23.60	$424.78	$5.78	18 TB		Used	Dell EMC Seagate Exos X18 18TB ST18000NM002J-2TV133 7.2K RPM Enterprise HDD
$23.61	$425.00	free	18 TB	3.5″	Used	Seagate 18TB Exos X20 7.2K SATA 3.5" Hard Drive HDD ST18000NM003D - 100% Health
$23.83	$429.00	free	18 TB	3.5″	Used	Seagate Exos X18 18TB 7200 SATA 6Gb/s 3.5" Enterprise Hard Drive - ST18000NM000J · 2 available
$23.83	$429.00	free	18 TB	3.5″	Used	Seagate Exos X18 18TB 3.5" SATA HDD Hard Drive ST18000NM000J 2TV03 90-99% Health
$23.84	$419.16	+ ship	18 TB	3.5″	Used	Seagate IronWolf Pro 3.5" ST18000NE000 18TB 6Gb/s SATA HDD Drive PN: 2YY101-500
$23.89	$420.00	+ ship	18 TB	3.5″	Used	Western Digital Ultrastar 18TB 3.5" SATA III 7200RPM WD180EDGZ/EDFZ
$24.39	$439.00	free	18 TB	3.5″	Used	Seagate Exos X18 18TB 7.2K SATA 6Gb/s 3.5" 100% Health HDD ST18000NM000J 2TV03
$24.39	$439.00	free	18 TB	3.5″	Used	HP/Seagate Exos X18 18TB ST18000NM002J 7.2K RPM SATA 6Gb/s 512e 3.5" HDD
$24.44	$439.95	free	18 TB	3.5″	Used	Seagate Exos X18 ST18000NM000J 18TB 7.2K 6G SATA 3.5" Hard Drive - 100% Health
$24.77	$445.95	free	18 TB	3.5″	Used	P37677-001 HPE 18TB SATA 6G 7.2K LFF SC He 512e ISE MV HDD
$24.77	$445.95	free	18 TB	3.5″	Used	P37673-B21 HPE 18TB SATA 6G 7.2K LFF SC He 512e ISE MV HDD
$24.77	$445.86	free	18 TB	3.5″	Used	ST18000NM002J HPE 18TB SATA 6G 7.2K LFF LP He 512e ISE MV HDD
$24.94	$449.00	free	18 TB	3.5″	Refurb	ST18000NM000J Seagate Exos X18 18TB 7.2K RPM SATA 6Gb/s 3.5" Recertified HDD
$25.56	$450.00	+ ship	18 TB	3.5″	Open box	Seagate Exos X20z 18TB 3.5in SATA 7200RPM 256MB HDD ST18000NM013J
$26.94	$475.00	+ ship	18 TB	3.5″	Open box	Seagate Exos X18 18TB SATA 3.5" 7200RPM 256MB SED HDD ST18000NM000J
$26.94	$474.99	+ ship	18 TB		Open box	MG09ACA18TE Toshiba 18TB 7.2K RPM HDD SATA-6GBPS 512MB 512e Distressed Casing
$28.89	$519.99	free	18 TB	3.5″	Refurb	Seagate IronWolf Pro ST18000NE000 18TB 7200RPM SATA 6Gbps 3.5" NAS Hard Drive
$30.55	$549.99	free	18 TB	3.5″	Refurb	Seagate Exos X20 ST18000NM003D 18TB 512E SATA 6Gb/s 3.5" Enterprise Hard Drive
$30.56	$550.00	free	18 TB	3.5″	New	P37673-B21 HPE 18TB SATA 6G 7.2K LFF SC 512e ISE MV HDD P38442-001- NEW RETAIL
$30.56	$550.00	free	18 TB	3.5″	New	P38442-001 HPE 18TB SATA 6G 7.2K LFF SC 512e ISE MV HDD P37673-B21- NEW F/S
$31.11	$560.00	free	18 TB		Open box	ST18000NT001 Seagate Ironwolf Pro 18TB Enterprise NAS SATA 3.5 256M Hard Drive
$33.33	$599.99	free	18 TB	3.5″	Refurb	Seagate Exos ST18000NM002C 18TB CMR 7200RPM SATA6Gb/s 3.5" Enterprise Hard Drive
$33.33	$599.99	free	18 TB	3.5″	Refurb	Seagate Exos ST18000NM003C 18TB CMR 7200RPM SATA6Gb/s 3.5" Enterprise Hard Drive
$33.33	$599.99	free	18 TB	3.5″	Open box	Seagate IronWolf Pro 18TB NAS HDD ST18000NE000 7200RPM SATA 3.5” Open Box
$33.83	$608.99	$9.00	18 TB	3.5″	Open box	NEW Seagate IronWolf Pro 3.5" ST18000NE000 18TB 6Gb/s SATA HDD PN: 2YY101-500
$34.11	$614.00	free	18 TB	3.5″	Open box	ST18000NM000J Seagate Exos X18 3.5" 18TB SATA 6Gb 7.2K Enterprise Hard Drive
$34.28	$617.00	free	18 TB		Open box	ST18000NM000J Seagate Exos X18 18TB 3.5 512e 4Kn Enterprise SATA Hard Drive
$34.28	$617.00	free	18 TB		Open box	ST18000NM003D Seagate Exos X20 18TB Enterprise 3.5 SATA 512e 4Kn Hard Drive
$34.72	$615.00	+ ship	18 TB		New	Internal HDD Western Digital 18 TB Internal HDD
$34.83	$627.00	free	18 TB	3.5″	Open box	Seagate 3.5" Exos X18 18TB SATA3 6Gbps Enterprise HDD ST18000NM000J LFF SATA III
$36.06	$639.00	+ ship	18 TB	3.5″	New	WD Gold DC HA750 18TB WD181KRYZ 01AGBB0 7.2K RPM SATA 6Gb/s 3.5" Enterprise HDD
$36.61	$659.00	free	18 TB	3.5″	Open box	Seagate Exos X18 18TB 7.2K RPM SATA 6Gb/s 3.5" 512e/4Kn HDD ST18000NM000J NEW
$36.67	$650.00	+ ship	18 TB	3.5″	Open box	Seagate IronWolf Pro 18TB 3.5" SATA 7200RPM 256MB HDD ST18000NE000
$36.69	$650.50	+ ship	18 TB		New	New Seagate 18TB ST18000NE000.PN: 2YY101- 500. WWN:5000C500E31E6D76 Ironwolf Pro
$37.17	$669.00	free	18 TB	3.5″	Open box	Seagate Exos X20 18TB 7.2K SATA 6Gb/s 3.5'' 512e/4Kn HDD ST18000NM003D New
$37.72	$679.00	free	18 TB	3.5″	Open box	ST18000NM000J Seagate Exos X18 18TB 7.2K RPM SATA 6Gb/s 3.5" 512e/4Kn HDD
$37.72	$669.00	+ ship	18 TB	3.5″	New	Seagate Ironwolf ST18000NT001 3.5" 18TB 7200 RPM Internal Hard Drive
$38.05	$684.99	free	18 TB	3.5″	Open box	WD Gold DC HA750 18TB WD181KRYZ 01AGBB0 7.2K RPM SATA 6Gb/s 3.5" Enterprise HDD
$38.22	$688.00	free	18 TB		Open box	Seagate 18TB Exos X18 ST18000NM000J Enterprise 3.5 SATA 7200rpm 256MB Cache
$38.28	$689.00	free	18 TB	3.5″	New	Seagate 3.5" Exos X18 18TB SATA III 6Gbps Enterprise HDD ST18000NM000J
$38.83	$699.00	free	18 TB	3.5″	Open box	Seagate Ironwolf Pro 18TB 7200RPM SATA 6Gb/s Internal 3.5in HDD ST18000NE000 New
$38.83	$699.00	free	18 TB	3.5″	Open box	Seagate Exos X18 18TB ST18000NM000J 7.2K RPM SATA 6Gb/s 512e 3.5" Enterprise HDD
$38.89	$699.99	free	18 TB	3.5″	New	Western Digital WD Red Pro 18TB 3.5" SATA NAS HDD - WD181KFGX
$39.12	$704.25	free	18 TB	3.5″	New	New Seagate ST18000NM000J 2TV103-001 Exos X18 18TB 3.5" SATA Enterprise HDD
$39.39	$699.00	+ ship	18 TB	3.5″	New	Western Digital WD Gold 18TB 7200RPM 3.5" SATA III 512MB Cache WD181KRYZ
$40.00	$719.99	free	18 TB	3.5″	Open box	Western Digital WD 18TB Red Pro NAS WD181KFGX HDD Hard Drive SATA 3.5" 512e NEW
$40.56	$730.00	free	18 TB	3.5″	New	Seagate Exos X18 ST18000NM000J 18TB 7.2K 6G SATA 3.5" Hard Drive
$41.61	$749.00	free	18 TB	3.5″	New	WD181PURP Western Digital Purple Pro 18TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5"
$41.63	$749.32	free	18 TB	3.5″	New	Seagate IronWolf Pro 18TB 7200RPM SATA 6Gb/s 3.5" NAS Hard Drive - ST18000NE000
$41.80	$752.41	free	18 TB	3.5″	New	New Seagate ST18000NE000 2YY101-886 IronWolf Pro 18TB 3.5" SATA NAS Hard Drive
$42.17	$749.00	+ ship	18 TB		New	Western Digital WD 18TB Gold New 2028 Warranty!!
$42.22	$749.95	+ ship	18 TB		New	NEW HAT5310-18T Synology Toshiba MG09ACA18TE 18TB 7.2K RPM SATA 6Gb/S 3.5 HDD
$42.35	$762.35	free	18 TB	3.5″	New	New Seagate ST18000NM003D 3DL103-002 Exos X20 18TB 3.5" SATA Enterprise HDD
$42.50	$765.00	free	18 TB	3.5″	New	Seagate ST18000NM001J 18TB 7200Rpm 256Mb Sata III Cache 3.5" Inch Exos
$42.72	$769.00	free	18 TB	3.5″	New	WD 18TB Surveillance Internal HDD - SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181PURP
$43.28	$779.00	free	18 TB	3.5″	New	Toshiba N300 Pro 18TB NAS HDD 3.5" SATA 7200RPM CMR HDWG51JXZSTB
$43.83	$789.00	free	18 TB	3.5″	Open box	Western Digital WD Purple Pro (7200RPM, 3.5", SATA III, 512MB Cache) 18TB...
$43.83	$789.00	free	18 TB	3.5″	New	WD Purple Pro 18TB WD181PURP 7200RPM SATA 3.5" Surveillance HDD NEW IN BOX
$44.17	$794.99	free	18 TB		New	WD - Red Pro 18TB NAS Internal Hard Drive
$44.39	$799.00	free	18 TB	3.5″	Open box	WD Purple Pro 18TB 7.2K SATA 6Gb/s 512MB 3.5" Surveillance HDD WD181PURP NEW
$44.39	$799.00	free	18 TB	3.5″	Open box	WUH721818ALE604 Western Digital DC HC550 18TB 3.5" SATA 6Gb/s 3.5inch Hard Drive
$44.39	$798.98	free	18 TB	3.5″	New	WD 18TB Internal Hard Drive HDD 7200 RPM 512MB Cache 3.5" (WD181KFGX)
$44.39	$799.00	free	18 TB		New	Seagate Exos X18 ST18000NM001J 18 TB Hard Drive - Internal - SATA (SATA/600)
$44.39	$799.00	free	18 TB		New	Western Digital 18TB WD Gold Enterprise Class Internal Hard Drive #4SRT
$44.39	$799.00	free	18 TB	3.5″	New	WD Purple 18TB Surveillance HDD SATA 6Gb/s 3.5" 256MB Cache WD180PURZ
$44.44	$799.95	free	18 TB	3.5″	New	Western Digital WD Gold 18TB 7200RPM 3.5" SATA III 512MB Cache (WD181KRYZ) - New
$45.05	$810.99	free	18 TB	3.5″	New	WD 18TB Internal Hard Drive HDD 7200 RPM 512MB Cache 3.5"
$46.67	$840.00	free	18 TB		New	WD Gold Enterprise Class 18TB WD181KRYZ 7200RPM 512MB SATA3 6.0Gb/s +Wrty3/6/31
$47.17	$849.00	free	18 TB	3.5″	New	WD Purple PRO 18TB Internal Hard Drive 7200RPM/512Mb Surveillance 3.5" WD181PURP
$47.22	$850.00	free	18 TB	3.5″	Open box	WD Gold 18TB 7200 RPM SATA 6Gb/s 512MB 3.5" Enterprise HDD WD181KRYZ New
$47.72	$859.00	free	18 TB	3.5″	New	Toshiba 18TB 7200RPM 512e 3.5" SATA Enterprise Desktop Hard Drive MG09ACA18TE
$48.89	$879.99	free	18 TB	3.5″	New	WD Purple PRO 18TB Internal Hard Drive 7200RPM/512Mb Surveillance 3.5" WD181PURP
$49.14	$884.47	free	18 TB		New	Seagate ST18000NM000J Exos X18 18TB HDD SATA 7200RPM
$49.72	$895.00	free	18 TB	3.5″	New	Western Digital WD Gold WD181KRYZ 18TB 7200 RPM SATA 6Gb/s 512MB 3.5" HDD
$50.00	$890.00	+ ship	18 TB	3.5″	New	Western Digital WD Purple Pro 18TB Surveillance HDD 3.5" SATA 7200RPM WD181PURP
$50.73	$913.11	free	18 TB	3.5″	New	Western Digital WD181KFGX 18TB Red Pro 3.5" SATA Hard Drive
$51.89	$934.00	free	18 TB	3.5″	New	Seagate Exos X18 ST18000NM000J 18TB 3.5 LFF 6Gbps 7.2K RPM FastFormat 512e HD
$53.61	$964.99	free	18 TB	3.5″	New	WD Purple Pro Surveillance 18TB Internal Hard Drive HDD 3.5" 7200 RPM SATA III
$53.83	$969.00	free	18 TB	3.5″	New	Toshiba MG09ACA18TE 18TB 3.5” LFF 6Gbps 7.2K RPM 512e MG09 Series SATA HD
$54.54	$981.81	free	18 TB		New	Western Digital 18TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6
$61.06	$1,099.00	free	18 TB	3.5″	Open box	WD181KRYZ WD Gold 18TB 7200 RPM SATA 6Gb/s 512MB 3.5" Enterprise HDD

Showing 110 of 110 listings

Buying tips

Helium-filled enterprise drives dominate this range: Seagate Exos X, WD Ultrastar DC HC5xx and Toshiba MG series, often sold used or refurbished with low hours. Many enterprise SATA drives (12 TB and up, and most white-label shucked drives) use the power-disable feature (PWDIS, SATA pin 3): in some desktop PSUs and USB docks they do not spin up. A Molex-to-SATA adapter or a piece of Kapton tape over pin 3 fixes it.

How this table works

We collect Buy It Now listings from eBay US several times a day and divide the total price, including shipping, by the drive capacity. Multi-drive lots are counted by their total capacity. Listings for parts, drives with an operating system installed, accessories and suspiciously cheap offers are removed. Host-managed SMR drives and drives pulled from storage arrays (EMC, NetApp, 3PAR) are excluded from the SATA table because they do not work in ordinary computers.