One thing I’ve learned over the years dealing with PC tech is that spinning drives is the one thing you absolutely don’t buy second hand.
I think this actually depends on a lot of things. I have an old Dell rack server and I buy ex-enterprise SAS drives for it. I use them in RAID arrays with dedicated hot spares and cold spares on standby. The eBay seller I buy from replaced a drive for free once when it was “error predicted” on arrival.