I was looking and noticed i could save a few bucks buying a used i5-2500k or an i5-3570k. But is it worth the risk? How do i know what kind of product im getting?
It's fine. Intel CPU's don't have pins anyway so you can't receive a CPU that has bent pins. I once threw a Pentium processor around the room, chucked it in a motherboard and it worked fine.
CPUs don't really become faulty like graphics cards do, so it's very safe to buy used CPUs on ebay.