Value of my travel trailer???

I'm in the process of repairing the camper now. There's no way I'd sell it or continue using it without fully repairing it. Anyhow I was looking for something similar for campers like Kelly Blue Book for cars. KBB lets you specify condition (good, excellent, poor, etc.) to get a more realistic idea of the value. I don't see where you can do that with NADA guides.