I just submitted my car to Shift so they could sell it. The fair market value for mine which has 13800 miles with an AWD XLE trim is around 30k. Mine is a 2015 in perfect condition. Pampered even. If you go with Carson, use their online ePrice feature. Those certificate prices that get emailed to you, I found to be fair and competitive.
It really depends on what you feel is fairly price and what is fairly used. I was just search Google under shopping. Or even TrueCar
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