You can use Amazon's chat and do it that way, pretty painless.
Paypal would have been easier in this situation, but, I see no reason for them to deny your claim, and Amazon is pretty good about this, and they don't want to be blacklisted.
Also leave a review telling other people that they are selling used drives.
Most HDs usually fail early on, or and the end of its life, it looks like a bathtub curve.
Too bad it isn't possible to know how much longer that drive would have lasted.