Bought from goHardDrive. I've already had a drive fail and require replacement, and that was with pretty much no use. It just failed on a smart test. The same drive, maybe, has already failed again. I'm going to nag em because of the warranty, but it's pretty worrying. Like, I'm sure failing a scrub isn't the end of the world, but it's also not a good thing, right?
Go Hard Drive is especially bad. They take drives that already failed but currently pass tests, then clear SMART data.
I had a 133% failure rate (all 3 drives, plus the first replacement before I sent it all back). Their customer service at least is good. I had no problems getting refunded.
I don't think I've ever had a used drive from random eBay sellers fail, and never prematurely.