it doesnt seem like its that hard to build one, especially if you already can build arcade controls, its just an arcade power supply (30-50$) a nice jamma harness or 2 (20-30$) one of those rgb converters (80$) or supposedly you can hack a dreamcast vga box (10-20$)for the rgb conversion (if anyone knows any more about this please pipe in) then connect it to your joystick/control panel or use hand held controllers or whatever, and voila, use the enclosure mentioned above or whatever you desire.