One guess that I have is that maybe they are changing the output shaft of the transmission to english measurements rather than metric. This would be a very welcome change since its no fin having to ream out hardened steel for the sprockets.
By the way, check out the motors on this page (Robot Marketplace) and their prices. The door motor and window motors are there, as well as some cheap motors that perhaps will be in the KOP. What do you think?
http://www.robotcombat.com/marketplace_motors_ame.html