i am also one of the happy buyers who had a successful purchase from Dave. got from him a Classics Ultra Magnus vs. Skywarp 2-pack. very accomodating guy since he held this toy for me since mid-March till TFCon 2007. was very easy to talk to and seal a great deal with the toy. and after our short conversation at his table, he's a guy who share the same online BST ethic i have: never back off from a deal you already agreed upon lest you want to have a bad reputation.
highly recommended.