I sold my SD1 on Ebay last week. The buyer didn't pay at first and asked for the transaction to be canceled. I started the buyer didn't pay process on Ebay and lo and behold I get notice from PayPal that the buyer paid and it is ok to ship. PayPal says my funds are pending and I get a message from the buyer asking for a partial refund of 90%. Is this some kind of a scam? PayPal says the money is pending and it is ok to ship. Should I ship. I'm not going to give any partial refund. What should I do?