Pretty wild conjectures here. My roof can get really dirty in two weeks, just sitting in the driveway. The person has not yet emptied the trailer of his/her belongings; maybe they plan on using it if it doesn't sell immediately. Dusty? It's a toy hauler; I would expect dust, sand, dirt - it's almost impossible to get out of every nook and cranny; even after multiple cleanings.
There are some valid points. How many hours on the generator? From afar the graphics look in decent shape, although the outside looks dirty. Take a close look at the roof, especially the sealant. The carpet roll looks like it has oil stains. Check the top of the awning for signs of aging, cracking.
Use the Nada guide for pricing. Use the lowest price with no added on options, that's what the dealers use on trade-ins. Where we live almost all used trailers sell for above Nada.
We just bought a 2006 Rage'n. I spent the last 4 weekends working on it. Scraped all sealer off the roof and resealed with new lap sealant. New silicone along top of all marker lights. New fuel hose and nozzle. New fuel pump, filter and 25' of gasoline line as well as oil and filter change for the generator. Polished and waxed the whole exterior. Thorough cleaning of black tank - sensors work again. Adjusted the brakes. Packed wheel bearings. Will put new tires on it in the next few weeks. Will change out batteries and add solar in the next year. It's used so it's a lot of work when you first get it. However, the maintenance is normal maintenance on any RV.
