Just purchased a Wee off of Craigslist. Seller insists that we go to bank together, I withdraw the money in front of him and then give it to him. Wont take the cash from me that he doesn't see a teller give to me. Said he's concerned about counterfeit bills, especially hundreds. My work hours are the same as banks and it will be difficult to get off work to do this. How can I make him comfortable with the transaction without going to the bank?