I went to Car Max, got 7,000 for my 2007 Toyota that was 10 years old written up on a contract. Then, took that 7,000 offer on paper into Mercedies. Told Mercedies I will not take less than 7,000 for my trade in. They agreed. I then bought the New Mercedies. I used the car buying tool and saved thousands more. Thank you USAA.