Perhaps they would allow an independent appraisal? I have been able to work wonders with those as they overvalue cars for the now reduced to 14 percent purchase tax here. They started this insanity so I feel no guilt about my complicity to reduce the amount below what it should be. You pay for your old car and pay the sales tax..Then a bill arrives in the mail that is nothing short of a stick up. I just am not sure where they come up with their valuations. I now do the best I can everytime to skin them by their own rules. They should wear masks like my dentist does. I told him once if I charged like he does I would wear a mask too.