Just went through this exact scenario last month. Sold a $400 pair of Jordans, and seller contacts me through ebay and says, "How dare you think you're getting away with this!" So I knew immediately he was going to pull the bait-n-switch scam. He claimed I sent him adidas, I've never owned a pair of adidas in my life. I had his number so I called several times, but he wouldnt answer. I'm occasionally in his area, so I told him if his scam goes through, I'll swing by his house so we can chat in person. Didnt matter, he left the claim open. I called Paypal the same day the claim was opened and they said it shows a good sign when the seller calls them immediately and is willing to provide any details or info to assist in the case. They did say, the buyer has to PROVE they received the wrong shoes. (That was strange to hear, because ebay/paypal always side with the buyer). But they said the responsibility would be on the buyer to prove the shoes I sent were wrong, and that could include him going to the police department and filing a police report. That was great news to hear, since that now would involve him filing a false police report to for the law to get involved. Anyways, long story, but after about one month, the case closed and Paypal voted in my favor. It just sucked having $400 tied up, and the stress of dealing with a deadbeat.