I think you have the same problem with any used RV. Reading other forums I read troubles from buyers who bought used and they supposedly went through a vigorous multi-point inspection at the dealer only to find issues after the sale. I think buying a used Class A and C would be a big challenge as you could have problems from the vehicle part of the RV and then all the other components like plumbing, electrical, window leaks and the list goes on. I travel often via motorcycle, and out on the road I notice RV’s broke down regularly, much more so than any other vehicle. Scary as I am interested in buying, but very cautious for the aforementioned reasons.