Go to the maker's website... It's wild! The guitars sound pretty good, too, and apparently Seal ones one of these, among a few other guys. I wouldn't pay that much, but on the site you can take a photographic shop tour, and they are all made by hand, one at a time, including the carbon-fiber layers, and all the metal parts are machined by the one guy, too (except the tuning heads)... I don't think what he's charging is out of line for what he's offering. I would never buy one, but that doesn't mean it's overpriced.
Was it Chris Stambaugh who said something like, "There is absolutely no justification for a four-string passive bass to cost $3,500. None."?