Well, it's more like $4.50, but were it to be localized, it'd presumably be $5 to help give an idea of scope.
Source: http://gematsu.com/2017/03/fairune-developer-announces-kamiko-switch#hvbD0gR6WCkqzomV.99Gematsu said:The latest issue of Weekly Famitsu reveals Kamiko, a new action game with pixel graphics for Switch from Japanese indie game developer Skipmore, whose previous titles include the Fairune series and Drancia. It will launch via the Nintendo eShop in April in Japan for 500 yen.
Players will select from one of three Divine Maidens (Kamiko), each with different abilities, and aim to take on the boss at the games depths.