Depending upon area, I see quite a few postings on Craig's List (http://www.craigslist.org/about/sites). Pick your local and then check under "food/bev/hosp".
2011 Excel 30RSO, 32', 3 slides, 4-Season 5th Wheel 2011 Ford F-250 XLT Super Duty, 6.2L V8, 385hp