You may have a tough time finding one that has been garaged/covered in that price point. We bought our 06 Tioga SL 31w about a year and a half ago for $40k. But it had super low miles and been garaged most of its life. When I found this one, I drove over 500 miles round trip to California to buy it. I looked at plenty that had been outside their entire life and the Nevada sun destroyed the graphics and dulled the paint.
Another source you can check is RVTrader. Good luck in your search, I know it can be frustrating.