that sounds like the big scam on craiglist, people email you telling they will overnight a money order/etc to them, he probably figured that was part of the scam
He is listed on Craigslist (PostingID: 1180848773). I sent him an email requesting to purchase an automatic transmission he has. We emailed back and forth several times then we I sent him an email advising him I needed his address to overnight a certified bank check I got an email back from him telling me to "stick my certified check where the sun don`t shine slime". Not sure what his darn problem is but he definitely has one. So I am warning everyone not to do business with him and go thru the aggreviation I just did.