NADA is merely a collection of data that provides averages. It really has nothing to do with the condition, uniqueness, region, or what's happening in the economy. The older a vehicle gets, there is less data. For vintage vehicles, including RV's, the NADA is not an accurate factor. Prices of vintage vehicles are all across the board for a variety of reasons.
'74 F350 44K,'79 11' Mitchell Camper, MINT All Original
'79 Mitchell 25' Class C, 460 46K, MINT All Original
'97 Rexhall Aerbus, 60K, 460, F53, MINT All Original