Not saying that CarMax isn't a normal dealership but how close are they to what a branded (Chevy, Ford etc) dealership appraises cars at. The reason I'm asking is because I'm considering trading in my truck for a full size SUV and CarMax quoted me $24K for my '13 Silverado crew cab LT2 with 48K on the odometer and a literal truckload of accessories. Any dealership I go to I'll have the CarMax paperwork in hand if that matters as a negotiating tool. Anyone have experience with this?