Just found this fourm and looks like a wealth of knowledge here. I've been looking for sometime for at Trek bikes and have decided to first buy used. Recently bought a camper and have been going to Texas state parks alot and I'm wanting to get into trail riding. Looking on ebay I've found this bike very close to me locally. What do you guys (gals) think this bike is worth? Trek 4500 . Thanks for any suggestions/opinions.