Check the classified ads on this site to see asking prices, ebay for sale and sold prices, as well as RV Trader to see selling prices. If the unit has been listed for a long time and not sold there is either too high a price, or the unit is in bad condition. Sometimes people are "advertisers" and not "sellers"!! I always price things high enough that I have some room to dicker on the price, but not high enought scare buyers away.
2012 GMC 2500 HD Duramax Denali
1976 31' Gone but fondly remembered
1976 22' Argosy