The best advice regarding was given to me years ago by a self-made multimillionaire: “He who cares less....wins.” It works with anything you buy/sell where there are negotiations.
Here is an example:
Upon selling a business, the buyer tried to lower the price $10,000 at the closing! I refused, said I would keep the business and started to leave. The buyer quickly reversed course and wanted to buy at the previously agreed price. I wasn’t having that.
Before I sat back down, they had to agree to pay $10,000 MORE. I really did not care and it worked. They paid dearly for their last minute games.
Be ready to walk. If that camper you absolutely love is at a dealer you that won’t give you a deal, remember, there are more dealers out there carrying that exact same unit.