Used to be an old scam when I sold stuff for an online game I played people would have the money in there account buy using PayPal it would go though fine as the balence showed as available. Then they just had to remove the cash from the account by the time PayPal took the money it was gone and they would just do a charge back and as the seller you lost the money. I got done for 200quid and they tryed to take me to court over it. I'd be very wary if you do it. Send them an invoice get a full receipt with copy's of there photo id so if they do try scam you. You have a leg to stand on