Yeah goodwill in the past 5 years has been a waste of time. They have become too savvy and I think people are collecting more. In 2016 I could go to the two near me and almost guarantee a decent find. I also think people get rid of this stuff in cycles and perhaps that vein has run dry for the generation of classic video game stuff. The same goes for photography and hifi audio stuff.

I do recommend estate/moving sales and regular old garage sales. I have found some pretty solid stuff. The estate/moving sales also have good pictures so you can filter through the bad ones.