If it went to the wrong address, how does he know you've sent it?
Disorganised sellers are a pain and they seem to be the main ones who insist on money orders. I had one recently who, after I paid, sent a very abrupt email wanting to know how the hell I came up with that figure. After I told him it was from his own email he settled down a bit, but still wanted more money. His delivery was the slowest ever. Add that to several days to get a money order delivered. He recently came up with something else I badly wanted, but I thought 'No thanks - not worth the grief'.
GG
The Gods made Heavy Metal
and They saw that it was Good.