Expand your horizons... get out and travel with your Argy! If you want to sell it, put a for sale sign in the window as you travel. Otherwise it is similar to selling any used vehicle... your local paper, signs at the markets, ads at online freebie places. I would certainly suggest Craigslist.org for your area. You do have to repost frequently to keep your ad at the top... but, hey, it is free! You might even get brave and go the eBay route.
Lots on the market right now... it is the time of year to sell, but many folks are being pretty choosy because of fuel prices. You might advertise your trailer's weight if it is an advantage over others, or explain how many miles per gallon you get towing it with your tow vehicle, etc.
I would say, keep it and go camping!
Mrs. NorCal Bambi traveling in S Tardis ~ from the Great State of Jefferson
My new blog:
Yreka History