I am looking to upgrade to a class A in a few years. I look at RVTrader a couple of times a week. I never look for RVs on craigslist. Just a thought from someone in the market. If you are trying to sell a $50K+ RV spend the $15-20 to get it listed so more people will see it. I would drive 500 miles to look at a RV listed on RVTrader with lots of pictures. I would not drive across town to look at an RV someone "BE SAILING" or "4 sell" on Craigslist.
Point is list it on Craigs list (if you want every scammer in town calling you), but also spend a couple of bucks, and get a national listing in RVTrader.