So I just found out about this little trend of scamming that has taken place on Ebay with a few people. It really hasn't taken off yet like the 'Nigeria Scam' but it's something to look out for.
So I know two people that were hit with it, and I was almost a victim of it as well. This scam mainly works with people selling electronics, but I'm sure there's ways it can be implemented into other areas as well.
So a buyer will win your auction. They can be Paypal verified, even have a confirmed address for you to ship to. After they recieve there item they will contact you and tell you that it's somehow defective (maybe done in shipping, maybe faulty product, whatever) and that they would either like an exchange or refund. You (the seller) tell them to ship the unit back so you can see for yourself and you'll take the proper actions after that. You get the item back, check it and sure enough it doesn't work, so you either credit them with a full refund or send them another new one while you deal with the defective unit and the manufacutre.
Now they got you. You probably didn't even see it did you. I know becasue I almost fell victim to it as well. What happens is the buyer actually sends you there old, defective unit that they already had, while keeping the new unit you already sent them and hopefully getting a second one as well or all there money back.
I had a funny feeling about the person telling me that the Ipod I sold them was completely defective, especially since it was the unit that I opened and tested when I first got them from China. When the unit came back it just didn't look right, like it was used for a while. So I pulled up the pictures I took of the Ipod, since I took a picture of the serial number on the back as well and that's when I realized the buyer had sent me back a different unit. When I contacted him about this he confesed that he was trying to either get a new one for free or get two for the price of one. He said he found out about this techinque from a friend, who had done it with cell phones, Xbox's, Playstations and other electronics. I was going to report him to Ebay but unfortunatly there really isn't any thing I could do except leave negative feedback, which really wouldn't help (I also contacted some of the other people he had purchased from before me to see if he got away with this from them, but apparently he was telling the truth when he said this was his first, and now last time tyring it).
So anyways, long post short. Sellers, make sure to mark down all of the serial numbers to the producst your selling, or take pictures of the serial numbers incase someone tries to pull a fast one on you.