When I first learned about how complicated cartridges were it blew my mind. Each cartridge cost $10-25 to make, and N64 was even more expensive. For years now though the cost of delivering the game itself has been essentially 0. It's just wild to me that a huge percentage of the price of a game went to 'nobody' in a way, and just to buying the chips it took to make the cartridge. It likely made up a bigger cut then actually went to the developer of the game.