from Phoenix CL - "used bikes - schwinn..."
"Men's, women's and children's bicycles. $20-$75 Schwinn, Huffy, Ross, KHS, Roadmaster bikes from 70's, 80's and current. Mostly 70's era Bike Boom bikes (Schwinns, Huffy, Murray) including Varsity and cruisers. 27" and 26" bikes. All have been cleaned and most have new tires and/or saddles. Great inexpensive bikes. Easily converted to fixed gear or single speed. "
probably only one $20 bike in the bunch, but there may be something in there for parts or as a project bike.
http://phoenix.craigslist.org/nph/bik/939186640.html