Some good deals out there today...
1988 Panasonic DX-3000 in Baltimore for $35! Large size
http://baltimore.craigslist.org/bik/766739187.html
1985 Panasonic DX-4000 with Shimano 600 EX in Albany, NY area. Guy has an $85 offer, might be a great deal sub $150. Chain is rusty. The guy simply cannot take a decent photo to save his life. I figured out what the bike was from seeing two decals on the tubes and asked him to confirm. ;-)
http://albany.craigslist.org/bik/766239443.html
1987 DX-3000 in Kansas City, MO area for $110. Seems larger than a 51cm to me?
http://kansascity.craigslist.org/bik/746085978.html