I guess the other thing you need is a bit of patience.
Trailer tents are not fast moving consumer goods and you may have to wait more than a couple of months until a buyer appears. I had my Conway advertised for about two months before I sold it for the asking price. If you need a quick sale you'll need to sell it very cheap.
------------- Ollie
2016
Monplaisir - Provence
Camping Les Gorges du Loup
I sold my Cabanon Neptune on ebay to a family from Holland. They all came over together to pick it up. Really nice family. Very easy sale. Good luck with yours. Ironically I ended up driving to Holland to pick up my replacement Trigano Alpha
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.