I've started flipping bikes recently. My first was a Schwinn Collegiate women's 5-speed that was bought for an old girlfriend. She rode it once. Bought for $30, spooned on 2 new tires at about $50, sold for $140, 9 years later. My rate of reurn pure year prolly wasn't much to brag about.

I've done great on some bikes. My last one was a Nishiki hybrid found in a dumpster. After tearing it down, I discovered that whoever owned it rode it around the world with any maintenance at all. If I get what I'm asking, I'll make about $15. That doesn't include my labor. But it was an interesting project. Keeps me away from TV.

Finishing up a Bridgestone mountain bike. What a little jewel. Whoever owned it, rode it hard and upgraded the wheels & derailuer. With it's early 90's surf dude paint job & battlescars, it looks like poopy.