Thought there is/was a separate section for selling your RV. Wrong ?
Any how, when I was having zero responses for my newspaper ad to sell my 1994 Ford F-150.....I changed the wording a bit and added "only $1.22/lb" and deleted the full price. Also, I mentioned it would be less than lettuce or zucchini or what ever was advertised locally.
I did also add, well hidden in the ad..."GVW 4219 lbs". Got a few calls and started some conversations about the F-150. Sold it a couple of weeks later to a man who saw the original ad...and later on, the newer ad. Did not get the hoped for $5147.00..but at least it got some attention in the newspaper and the ad stood out from others.
Might work with your RV...at least to get some calls and get chatting with people.