Minimal testing has been done. They are not offered as perfect, as they are up to 35 years old.
Early microcomputers were known to have faults and require technical knowledge to repair or operate properly. You are free to ask questions.
The item "Segate ST2502N 5.25 SCSI Hard Drive with Adaptec Disk Controller- ships worldwide" is in sale since Thursday, July 23, 2020. This item is in the category "Computers/Tablets & Networking\Vintage Computing\Other Vintage Computing".
The seller is "vintagecomputermuseum" and is located in West Falls, New York. This item can be shipped worldwide.