My neighbor threw one out, a cheap Mongoose mountain bike. I rescued it even though there were lots of things wrong with it. I know I could have broken it down, but I haven't learned much about bikes (lots of other stuff I'm learning right now) and it was taking up space. I put it on craigslist for $20, took $5 from the first buyer so I could be done with it. If I get a few more, I might start learning about them.