If you're looking to find just the bare PCB board, they come up every now and again. Many of the original owners have been sitting on these since they came out. To my knowledge, nobody has completed one yet. And then I vaguely remember something about a custom bootstrap chip that needs to be programmed before the thing will even work.
There are a lot of the boards up and running. Just look in the
http://www.a1k.org forum (german) and you can see some of them (even with enhancements).
