I have a friend looking for a bike to ride on the local MUP's. I found a Schwinn Criss-Cross (not sure of the exact year yet) on Craigslist for $50. From what little info I could gather about it, this bike is a middle-of-the-road hybrid/fitness bike. I did read rumors of some type of weird wheel sizing that would make tires harder to find for it? I emailed the seller to get some pictures and better description of the bike but can any of you bike experts tell me anything about this model of bike? Also, assuming the bike is in good shape, can anyone offer a reference point on what a bike like this should be selling for? $50 seems to be on the high side for a bike that was less than $450 brand new.