Sold my 2013 Audi S4 with Autonation last Monday, 100k miles. I was very surprised that Carmax and Carvana were the lowest!
KBB
$15,451
AutoNation
$16,500
Land Rover
$15,500
Carmax
$12,000
Carmax + Edmunds
$12,500
Carvana
$12,045
Vroom
$14,186
Shift
$12,700