Not strictly eBay but how are Etsy for resolving disputes? Bought a camera (thankfully didn't spend much) and the seller gave me a fake RM Signed For ref number and it hasn't turned up over a week later (UK based seller so no 'actually this is coming from China, SUCKER' shenanigans). He's now pulled all his stock and has marked that he is on holiday for 2 weeks. He did respond to my message saying he would try to sort it out long distance but I don't see how that's possible and my gut says he's dicking me about. I didn't realise he has a standalone online store too which has an extremely bad rep if you Google it.
Edit: well, that seemed painless compared to eBay, just submitted the mediation request and they gave me a full refund fairly quickly.