I bought some arcade buttons and sticks from him in an eBay auction. From what I remember, he shipped quickly and everything was perfect with the auction transaction.
Ever since, he's e-mailed me every two weeks or so with an offer. Jamma boards, parts, etc. Never annoying, always overpriced. I've thought about purchasing a few times.
Haven't dealt with him since 2006, so things could have changed by now.