I bought one from him, and I'm very satisfied. It came as a kit, assembly took me a few hours. The fan is a dayton shaded pole, and quiet. I've got it ducted to the outside of the house, and it's quieter than a hairdryer.
Edit: I also contacted him about a few questions--the assembly drawing was unclear on a few things. He got right back to me, and gave exactly what I needed. He also publishes his phone number and a few other things on a sticker on the side of the booth.
Dan