If bare math is right, excluding any kind of deal etc.

The Nintendo Switch 2 with Vietnam tariffs might cost:
$450\times 1.46=\boxed{657}$ US dollars

And cartridges with Japan tariffs might cost:
$80\times 1.26=\boxed{100.80}$ US dollars

but also they could reasonably have seen this coming, and could have held off on the price announcement.

They probably thought that Trump was spewing BS and didn't feel the need to edit their pre-registered Nintendo Direct