I was on the other side of this coin a few months back. I bought a used CPU/Mobo combo from a "reputable" seller (he had over 1000 transactions with all positive feedback). I recieved the wrong item and tried to contact him. Ebay blocked all my attempts to email him stating that the user didn't accept direct contact or something to that effect. My only recourse was to list the item as "not as described". He wanted me to ship it back at my cost, but I refused and told him once I recieved my refund along with a shipping label I'd send it. He refunded the money with no shipper and Ebay closed the case. I still have the CPU/Mobo with no where to send it, my gain I guess. I really wish it would have been handled better on his part. I understand mistakes happen, but the burden ($) should be on who ever made the mistake. In my case the seller, in other cases no doubt it'll be the buyer.