We have sold 3 different RVs by using Craigslist, Facebook and parking on a friends empty lot with a FOR SALE sign on it. Yes, you will get scam calls, but if you have any brains whatsoever, you can sniff those out quickly. Block them from calling again.
If you price it right, you will sell it in no time at all. Get CASH and have the transaction take place at your bank. If there is a lien on it, even more reason to have it done at the bank.
We have purchased 2 RVs on EBAY, one about 2 hours away and the other one was about 800 miles away.