Edit: forgot to mention they stopped Selling here.
The US would probably be your best bet.
Who is "they" ?
Nintendo? They stopped selling products??
Nintendo decided to stop selling their products in Brazil due to taxes.
Ah ok, thanks.
Wouldn't that be the kind of information essential to the OP?
I've heard that Russia is one of the cheapest but you have to watch for the location locked content.
I don't know, Nintendo is as expensive as other video games here. I would assume it's the same all over. Of course from my point of view, most other countries would be cheaper because of the value of the currency etc.