I have 3 of these available $325 each:
Seagate Exos X18 18TB Enterprise HDD - CMR 3.5 Inch Hyperscale SATA 6Gb/s, 7200 RPM, 512e and 4Kn Fast Format, Low Latency with Enhanced Caching Internal Hard Drive HDD - ST18000NM000J
I have 4 of these available $230.00 each:
Western Digital 14TB Ultrastar DC HC530 SATA HDD - 7200 RPM Class, SATA 6 Gb/s, 512MB Cache, 3.5" Internal Hard Drive HDD - WUH721414ALE6L4
I have 4 of these available $60.00 each
Seagate BarraCuda 4TB – 3.5 Inch SATA 6 Gb/s 5400 RPM 256MB Cache Internal Hard Drive HDD – ST4000DMZ04/DM004
I have 7 of these available $65.00 each
Western Digital ENTERPRISE 4TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5 Internal Hard Drive HDD - WD4000FYYZ
All are less than a year old except the 7 Western Digital Enterprise 4TB drives.
The drives are all plotted, you can use them immediately. I have them on Space Pool now.
I had zero problems using any of them listed above.
Rob, Naples, Florida