Indeed, at least they are cheap. This one came free as far as I'm concerned, so even better. I bought an early 90s Shimano 600 group that someone had just built a bike with and he threw in the basically new BB and cassette because he was selling the frame and wheel-set separately anyway. The only problem I'm having now is that I was going to sell the 600 group, but I just got a 91' Miyata 914 frame-set yesterday and the 600 would go perfectly on it. All things considered, I'd end up with a period correct Miyata 914 in good condition with a Really good condition 600 drive-train, the bike only needing wheels, and only $80 in so far. If I keep that 600, I could have a nice bike to ride for maybe ~$150-200. Grrr... I hate these situations.