I'm using the winter bike now, but what I've been riding most of the year is an 86ish Univega road bike I got for $75 and later converted to a fixed gear. Before the conversion, you would have had to spend $350 or more to get a better bike from BD.

So it is possible to get a very nice bike from CL for a good price. You have to know what to look for though and be patient. It might take weeks to find a quality road bike in my size that I'd consider a good value. Seems like really huge or really tiny bikes are in good supply.