Yoshi and the Mysterious Book will sell for $60 in the eShop and will have an MSRP of $70 for the physical cartridge.
An opmist would say that it is $70 game and they are adding a $10 discount for buying it digitally. A pessimist would say that it is a $60 game and there is a $10 fee for the plastic cartridge.



There’s also storage costs.
In a world where games can easily be dozens of GB and storage is at a premium (thanks, AI companies) having physical media with most of the game data on it makes it a lot easier to juggle between games.