If your looking to make money, i have found that the best way is to buy a bike when you can get a good deal on it, invest in a camera and put up really nice pictures of the bike. Over the past month i have made $500 doing this. First i bought a pista concept frameset for $400, and eventually sold it for $700. Next was my pista which i bought for $450 and sold for $620. Right there i already have made $500 by doing nothing but investing a little time into taking nice pictures, and a nice ad on craigslist. This is the best way to make money imo