There is a Losi 22 in the for sale section, mostly there, looks a good price, not checked feedback on seller and I don't know them but might be worth you having a look ? I know what you're saying about buying used but generally on here people know what they're on about, describe as is so they get decent feedback from whoever they sell it to and you save yourself a lot of cash.
http://www.oople.com/forums/showthread.php?t=98886