Try Airstream.com classifieds......
We sold our 04 22' CCD in less than a month online (sight unseen) with this free service. I took lots of pics and included all the standard features and options right off the sales document as the description. Regardless of where you list yours for sale, the more you can describe what you're selling, the less the buyer has to wonder about what they're looking at online (especially if they have to travel a great distance to purchase). The buyers of our 22' were very happy and appreciated how "up front" we were about our AS!
Jim & Cheryl
2017 28' Signature CCD
2017 GMC Denali HD Crew Cab 4x4
Blue Ox Sway Pro Hitch