Ebay buyer protection is pretty good. I had to use it once for a vendor that sold dry chemicals for gold refining. He never even shipped the item, didn't answer my e-mail inquiries. About 2 weeks after filing my claim, Ebay refunded my money, and he was booted from ebay. When I purchased my item he'd had 99% good feedback, but a string of bad ratings ensued right after I bought my item. You have to put a claim in with Ebay ASAP, then give the guy a chance to make good. If he doesn't, you have to let ebay know, and they'll try to resolve it. You'll in all likelihood get a resolution, but it might take a month or so if ebay has to refund you the money. My experience.
Marcel