It's kind of funny how amateurs with an internet connection think they can beat a professional whose livelihood depends on beating you at the retail level.
People actually believe that they got KBB in trade on defective motor vehicles, that's a hoot!
I wonder if you took the defective vehicle out of the picture, and offered car max cash, if your selling price would be the same? If so, that's really sad indeed. It's like folks going on the internet and getting an "AMAZING" price. Sure, at the etail or retail level. The retailer who goes to the distributor/wholesaler gets it 45% less than that.