How do I know how much to pay for a used TC?

I shopped that price range last year in Washington. I think $25k is a decent price if mint for that model, options and year. Wouldn't pay a penny more unless newer. What's the build date? 2012? It's probably pushing 5 years old. Good luck, those are sweet looking rigs similar to my setup, love the rear kitchen.

Also, curious what you will be hauling it with. They are very heavy.

Is this it? https://www.rvtrader.com/listing/2013-Northwood-Mfg-Arctic-Fox-992-119153551