As your search continues all I can say is www.nada.com is your friend. It will give you low and avg. retail prices of just about any RV you are looking at. This will give you a ball park of what things have been selling for.
I found it interesting in the link in your last post Tells us twice no low ballers then price is firm but chooses to leave out the year of the truck and camper and gives no information on the truck. Little things like is it a gas or diesel engine.
Good luck with your search. Getting there is 1/2 the fun.