There is one quite inexpensive on Ebay right now. Looks to be a match for the system unit at the CHM as well. Maybe they need a spare. I don't know if they want parts machines or not, but for the price it is almost tempting to pick it up.
http://www.ebay.com/itm/321399704868 Hope Christmas brings everyone a lot of new toys. (as in old ones). Thanks jim