i'm fine with $60 for a mario maker game. no story mode - because we all know 99.99% Mario 2D games is about saving the princess from Bowser. So we don't need a story mode in this game.
other games are $60 but some gamers feel it should be less than $60 too. and nowadays big budget AAA games are more than $60 if you add those season pass and DLCs.