I think my club membership is like 6.99 a month and I can have 5 ads with a boat load of pics... If that 84 bucks in a year helps me sell one little part it pays for itself let alone something big. An example of what I would consider a properly constructed ad to look like go to ad 2134389
Tons of details and pictures from every angle. You still get tire kickers but you weed out alot of foolish questions by answering it in your ad...
As far as your trailer I would say 12,000 would be about the best your gonna see or most likely a decent 28 footer and around 6,000. The trade value higher makes most people run. THE PRICE IS THE PRICE...
Hope this helps.