The best way to address this issue would be to educate yourself by looking at a lot of different RV's, private and at Dealer lots. Ask questions, learn all about the systems, chassis, electrical, everything. The more you look, the more it will open your eyes to any problems. I believe that if your a Boat or RV owner, you should know your rig front to back. Sure, long distance buyers may not have that choice. With these forums, the internet, and local knowledge available, you would think the average buyer would do OK. Of course after the sale, you will be the main person taking care of it. Dealers are OK, but not all are good. Just read the forums. Good luck and happy camping.