I haven't been scammed yet but I've been close. I use to sell stuff on eBay and when ever I sold electronics I would get tons or email about closing the bidding and selling the item outside, or without the help of eBay. The majority of the buyers made ridiculous offers, like $400 for a 6 mega pixels camera. They also wanted to pay by check and they wanted me to send the items overseas. Once I heard check and Nigeria, I knew it was a scam. Now I only do transactions by credit card (cash- only when the person lives around my town and he/she picks up) and I never ship overseas.