300 Diecast Models inherited

I love cars as much as the next guy but have not really been into Diecast. Now with my Father-In-Laws passing I have inherited almost 300. Some are really nice, brands like Maisto, Motor Max, Muscle Machines, Franklin Mint and more. It is a bit overwhelming.
Im going through them, None in boxes but most are mounted in some fashion and pulling the ones I might want.
What is the best way to sell off the rest? Ideas?