My son was selling an expensive HD Camcorder on Ebay and someone took the Buy-it-now option for £650. They have zero feedback, only joined the same day and live in USA. I told him not to go through with it as I'm sure he's being scammed. Even if they pay through Paypal is it not true they can dispute the transaction afterwards and their money gets refunded and he never sees his money or camera again? How can he back out of the transaction without getting neg feedback?