I have one on ebay right now
(
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=1922353670)
It is one I have been playing with but is still in pretty good condition. It starts at only $20 the 2 120 batterys cost me over half that.
If I get some brand new cars and do a better job on them, I am going to put them on ebay for $40. Or, I was thinking about doing the dual cells with 2 tomy batteries, that would make it alot cheaper! and still, the 50mah batteries do last about 5 min, and only takes a min to charge it again.