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.
They say that, yet whenever I see a physical cartridge for sale in HK it’s still cheaper than digital lol
It is a manufacturer suggested retail price. If a store wants to sell it for more or less, it is their right (and I am not aware of Nintendo having a Minimum Advertised Price policy).