Selling a car is NOT a pain in my humble opinion.
List them online with autotrader/cars.com/craigslist with a picture and basic info. Make a web page with lots of pictures and all info on the car good and bad. Put the URL on the online ads.
Provide a sales agreement that includes only cash or wire transfer accepted and is required before keys and title.
Don't get many calls. Usually a couple of months before the buyer comes along. There are usually one or two tire kickers from Craigslist, but I understand as they are looking at the vehicles available in the area. There is always a couple of scammers, but I just insist on cash monies or completed bank transfer before possession (transport) or title is given.
Always got way more than carmax or trade in offers (wholesale). Basically sold for what the vehicles like it were selling for at the time (retail).
Web page for my 928GT
Web page for my Range Rover
Web page for my Cayenne S