I guess it's a mistake, yet it seems strange that Nintendo hasn't noticed after 4 days of this mistake..
edit :apparently it is only in Chile and Colombia have error
Chile: 400 Chilean pesos = 0,44 USD
Colombia:180 Colombian pesos = 0,41 USD
Peru: 156 soles = 40,00 USD
Argentina: 5120 argentine pesos = 39,00 USD without tax
Mexico: 830 Mexican pesos = 41,00 USD
Brazil: 220 Reals = 44 USD
edit :apparently it is only in Chile and Colombia have error
Chile: 400 Chilean pesos = 0,44 USD
Colombia:180 Colombian pesos = 0,41 USD
Peru: 156 soles = 40,00 USD
Argentina: 5120 argentine pesos = 39,00 USD without tax
Mexico: 830 Mexican pesos = 41,00 USD
Brazil: 220 Reals = 44 USD