Condition is everything, and leaks are the prime killer of RV's at it leads to wood rot, new or used, you really should consider having it professionally inspected, and not rely on the selling dealer to perform the only initial inspection. If you need an inspector and don't know one there is a search tool on the nrvia.org web site. Full disclosure I took their inspector course a few months ago, and it was a real eye opener, not just on issues with older RV's but on ones that were new as well. We had 2 RV's at the course that were nearly new, one with a 2016 and the other a 2017 just picked up from the dealership a few weeks earlier with with significant issues, roof leaks, sealant gaps, etc.