Why not sending him a quick email see what's going on? I think it is unlikely he's closed shop. Most likely he has a new domain or website. If I recall his email wasn't on the same domain. I'll have to dig it up. Last time I bought stuff from him was a while ago.
Look ups on the domain show it's still registered etc.
A singapore forum says the website is under DOS attack and to look him up on facebook for more info.