Bought one for $32k off Craigslist and sold the same one for $29k several years later. Bought another last year, also off Craigslist.
Buyimg, selling, and buying again, were all done within 150 miles from where I live, although, I did have calls and email from other states.
If I didn't have success / interest after a few weeks on Craigslist, RVTrader would have been my next step. I could have posted simultaneously to both but the calls and correspondence from the craigslist ad took up plenty of my time.
Be sure to post lots of pictures and an honest description of your MH.
Good luck.