Would never sell to a Carmax unless I was specifically buying a car from them let alone buy my car from Vegas. We get way better deals from Cali dealerships.
Was curious though so I went in winter last year at a Carmax in Vegas. 2016 model at 6k miles. 80k msrp. Got quoted 54k. Lol.
And they said, and I quote, "One of the best condition, and lowest miles we've ever appraised."
I'd like to pride myself in keeping my car in the the best condition but no way I'd sell for that price though.