April 17, 2012 2:01 AM PDT
If your not in a hurry and do lots of looking you can get some good deals. The places Tumbles said are good suggestions, just don't be in the "I need to buy a bike" mind set, but in the "I'll keep checking these until I find a great deal" mind set.
may also try CycleTrader.com, but the good deals in there go FAST, so you need to check often. And local motorcycle swap meets may be another good place.