For the last year or so, my brother has ridden a 77 550f as his primary means of transportation. I always thought is was a pretty nifty bike, but it just wasn't quite right. Looking at it overall, it had wonderful styling, nice performance, and a silky smooth engine(before it died, that is). With that in mind I've always looked at 70s CBs on Craigslist and such, but it wasn't until I saw a local '73 CB250F that I realized what I was missing. This thing is beautiful! It's out of my price range, but upon doing some research, I think I want to keep my eyes pealed for one in the near future. What do this things usually go for in decent shape? I wouldn't mind a bike that needs a little work, but I don't want a money pit. Assuming some cosmetic blemishes and decent mechanical health, what would a 350F go for?