I have been on the other end of a couple of purchases on Ebay where parts were junk or not as advertised. I use paypal because it will refund my funds if the seller is a scammer.

In all the cases once I contracted the seller and discussed the problem there was either a full or partial refund. Not all sellers are good. I had 1 with a 99.9 positive rating send me trash and then offer to refund 10% then 20 then 25 and finally said 100 but was worried more about getting a 5 star review (which he didn't get) than the money. Some sell junk and try to get away with it or only offer to refund pennies.

Both buyer and seller have to be alert these days.