They're hand made, and the design requires that the switches are wired in by hand. They even add their signature to the inside of the case. This means that they aren't cheap.
However, if you have a specific requirement, such as brown switches, or a particular key map, or even a one-off case they are happy to help.
You can rent a board off them for a while if you're not sure. You can get hold of them on ebay uk, but they can be quite beaten up. Tell tale signs include square holes in the case (missing a switch).
