Looking around at the Richmond CL. MAN you have some good stuff in your area!
How tall are you? Male?
SMOKING DEAL!
http://richmond.craigslist.org/bik/1718155977.html Looks like a 58cm 3.0 Crit frame R500 or R600 around 1990 good for somebody around 5'8" 5'10" Thats a Entry level Critirium race bike. If it is a R600 That could easlily be flipped for $300 if it is in as good of shape as lit looks.
Even better
http://richmond.craigslist.org/bik/1716410336.html Thats $250 in good shape and
If you like more upright. This is a Good bike ready to comute, very Fair starting price, Offer them around $275 see if they will meet you at $300
http://richmond.craigslist.org/bik/1714231170.html Honestly thats a pretty new bike. the price is decent if they hold to it.
Fair if it has been maintained.
http://richmond.craigslist.org/bik/1712943572.html
Fair price on a good vintage Fuji.
http://richmond.craigslist.org/bik/1712523380.html Get it tuned up.
Price a bit hi but DelRays ride great. Had one just like it. Looks like a 84.
http://richmond.craigslist.org/bik/1711640433.html
Bike GOD (RIP Sheldon) website if you want to learn.
http://www.sheldonbrown.com/