How negotiable are travel trailer prices?

We’ve rented a ton and know what we like, got our ducks in a row, and have decided on a model and floor plan.

Buying is the logical next step.

Looking at used 2020-2024 grand designs in the \~$30kish range, how negotiable are these prices?

Is offering 23-26k going to insult them like it would a car salesman? Should we start lower? We can pay cash, finance, whatever they want it will be paid off very soon regardless. Just want the best out the door price and want to know where to place a first offer.

Edit: i dont care about insulting salesman, ask my vendors at work. I just want to avoid wasting time on an offer that’ll never be accepted.