The amount of money you can make selling older used RV’s depends on the original value of the RV, the number of miles on it, and general wear and tear. One guide for determining the value of a particular RV is the Recreational Vehicle Blue Book, available at rvvaluesonline.com.
As a general rule, the value of an RV decreases by between 25 and 40 percent as soon as the vehicle is driven off the lot. Luxury RV’s depreciate even more rapidly. When an RV is five years old, it is usually worth between 35 and 50 percent of its original purchase price, according to the New York Times. However, between the fifth and tenth years of ownership, well cared for RV’s may lose less than two percent of their remaining value per year.