The trick to getting top dollar for your car when selling it is to detail it
so is has good curb appeal, fix any obvious mechanical and cosmetic problems
before presenting it for sale, and doing some research on the value of the
vehicle beforehand.  It may help to know which used vehicle guide the buyer
is using.  Most new car dealers use NADA, some used car dealers Kelley Blue
Book or Black's Guide, private parties often use edmunds.com.

You are selling to CarMax YOU will not get top
$$$$ But do make sure it is clean.  Trade in value or less