Any used RV is going to be cheaper than a new one of the same model. However, buying a used RV from a dealer will cost you more than a private party. That’s because they’ve already inspected it and repaired anything that might be wrong with it. You’ll have less wiggle room when negotiating with a dealer, but you may also have additional options like extended warranties along with the peace of mind that comes with knowing the RV is in good shape.