An RV is not a car. NADA values represent average prices based on attainable figures. A motorhome, trailer, boat, are worth what the buyer is willing to pay for a RV in a given condition. If it is fantastic with low mileage stored in a garage NADA values mean nothing. If you are going to trade it in, the dealer must account for detail and prep costs, salaries, and profit. NADA values become a guideline for negotiations based on what is being purchased in exchange. I've always traded in my RV's. Sure I've given up posible profit, but I also didn't have to deal with resale.
JMHO