Before signing on the dotted line, make sure that you’ve inspected the R.V. In particular, make sure that all electronics and appliances are in working order; this goes double for plumbing fixtures.
While it is easy to be distracted by the shiny new features, don’t forget that R.V.s are still vehicles. Take the time to go over the engine, wheels, brakes, and other parts of the R.V. An experienced mechanic can help you do this if you aren’t well-versed with the inner workings of such a large vehicle.