Car cash is okay as long as you don't have any expectations of a no-hassle car sale. The range of prices they suggest on the phone is very different from their offer when you get there. After playing up minor dents in the car and suggesting that they could not possibly pay more than half of the phone quote, they eventually agreed to a price about halfway in between (this after several ""I have to speak to my manager"" trips. It is convenient and fast but if you really want top dollar, I'd suggest selling the car yourself. By all means, be prepared to haggle.
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