Hello, recently I have purchased 10 12 month XBL codes and listed them on eBay for $53 each. I have marked on the listing that the codes will be emailed to the buyer and not shipped. Today someone bought all 10 of the codes. Before sending the codes, I was checking out his ebay profile and noticed that the account was created in 2000. He had 38 feedback, all of it being buyer feedback. There was one weird thing however, all of his feedback was earned in the last week and given to him by other accounts with very low feedback. I am afraid that once I send him the codes via email, he will charge back and say he did not receive them. Is this possible at all? Should I just refund him and re-list the codes and sell to individual buyers to reduce the risk of charge backs.