Buyer damaged my coin then claimed on it

I sent a perfectly good coin to a US buyer.............he said it was not what he wanted so I said ok send it back............when it came back he had scratched it, thus it now has no value!!!!!! Ebay/Paypal refused my claim against the buyer and I notice there seems to be no course of action available when this happens........................so thanks Ebay for taking a lot of fees off me in the past and not supporting me!!!!! I use the word 'past' as I ain't dealing anymore with Ebay/Paypal.........|||Sorry this happened to you. Unfortunately, this is a common thing on eBay now and the site allows it. Most commonly this happens with electronics ex: buyer has a broken one, buys a new one on eBay, claims it arrived broken, sends back broken original one for refund + keeps new electronic (my posting ID)