On a slightly different tack, I had a buyer open a case against me recently. I sold my old electro acoustic and the buyer received it and left positive feedback. A week later they opened a case against me, saying the first fret was worn and that the guitar was unplayable. When I said to send it back they said the "guitar repairer" said to send it off for repair and demanded 50 quid partial refund. When I refused they escalated it to eBay customer support. Previous experience told me that I was screwed and that eBay would enforce a refund. As it turned out, less that 24 hours after it was escalated, ebay actually found in my favour and told em to do one. So on occasion, they do actually side with the seller. I also learned that positive feedback has NO bearing on any case. Which is bloody ridiculous in my view.