We bought a 2011 Palomino Stampede S-238 last November on Craigslist. I drove from Maine to Pennsylvania to get it, but it was worth it.......and of course the price was great, real great ($11,500).
I also sold my Starcraft popup on Craigslist, and it sold in 2 days.
The more places you try, the better. With CL being free, it's got a real advantage.
You might also want to try the local paper, e-bay, or RV-Trader or something similar in your area, just to hedge your bets, but you'll be paying for those. There is also the RV.com link for sales (I think it's still working?)...as well as other on-line options...but you'll be paying, and shipping could be a hassle, if it sells a distance from your place.
A lot of it will depend on the value, as well as how fast you want to sell, and how much of a discount you need to put on it, to get it to sell.
Bill & Claudia / DD Jenn / DS Chris / GS MJ Dogs: Sophie, Abby, Brandy, Kahlie, Annie, Maggie, Tugger & Beau RIP: Cookie, Foxy & Gidget @ Rainbow Bridge.
2000 Winnebago "Minnie" 31C, Ford V-10
Purchased April 2008 FMCA# F407293 The Pets