I have quite a large game collection 8200 games (6600 physical games) and the cutoff for me was Covid. The prices all went crazy high. The only reason I have such a huge collection is because I love to find bargains like $1 per game. Another thing is most people now have smart phones and look up prices at yard sales and thrift stores. This means less people selling for cheap but also more flippers hunting for deals to resell.
I still buy games, but it’s way less often than before 2020.