I sold a 2000 Sahara with a completely toast frame for $3100. I listed it on Craigslist Philadelphia for $3500 with a Google Voice phone number set to forward to my cell phone, so noone knew my real number: Within the next hour about 7 people called me, and somone bought it the next day. Under 24 hours, cash in hand!
I was totally honest about the condition of the frame in the ad, and when people called, but that Jeep STILL sold itself! Full doors, both tops, 4.0...
Also, I polished that Jeep for about 2 hours and took 40+ pictures, uploaded to Photobucket, and linked to that album from the Cragslist post. The time I spent in cleaning the Jeep and advertising it well really paid off!