Sure they're going to try and get it for as cheap as they can, that's how they make money. Have you tried to sell it yourself for a couple of weeks? I'd take it by an RV place, see how much they'll give you for it, and then list it for sale on Craig's list for 30 - 50% over their offer. What do you have to loose but answering a few phone calls, showing it a few time and maybe selling it for more than the dealer will give you!
Bill
Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.