Ebay is the way to go, you will get about 50 - 70 bucks if you clean it up good and post good pics!
Why not give the ammo motors a try, tower is selling most below 35 bucks right now. Heres a link to a good 3s motor that should work well in the crt.5:
http://www3.towerhobbies.com/cgi-bin...?&I=LXLXA0&P=7
It is slightly longer than a 9l and has similar kv. I am buying 4 different ammo motors next week and we will see how they perform!