It’s always worth it to check out private party sales on Craigslist, or one of the national listing sites. I’ve sold multiple cars for over 50% more than the KBB/CarMax price. 50% won’t happen on a newer car of course, but it can still be $1000s.
That being said my last car went to Carvana because it was too pricey for most of the CL shoppers.