Trek 700s have been easy to come by around here. I got a 21" framed one in good shape for $35 that is now my light touring/commuter hybrid and just picked up a 19.5" frame and fork (straight and corrosion free but scratched up) for nothing. The only more plentiful quality bikes in this area seem to be the old Trek 800 series MTBs. 700s are great frame/fork sets that can be built into anything from a road bike to a 29r trail or cyclocross bike. Not going to be fast road bikes, but very comfortable commuter, fitness, hybrid or touring setup.