Whenever I see something in a foreign currency, I convert it to our dollar standard for a comparison. 70 euros equates to about 80 dollars. So, Europeans buying our games would be saving money. And the exchange rate for Mexican pesos is 10 to 1. So, a game would be cheap according to our standards if it cost 400 pesos, which in Mexico is still an awful lot of money. It would be in everyone's interest to just charge 60 everywhere, despite the different currencies and their exchange rates. The people who determine how much to sell these games for should take into account that not everyone uses the American dollar standard for purchasing products (games). Hope this clears some stuff up.
You're too bad brother, the value of the dollar here is $13.50 MMX, and that's not all, games costs are about $ 1,000.00 MMX (almost every one), which would come to be $ 75 USD, not just the dollar is expensive here, but also the companies that import the games, they really exceeded prices.
And yeah, if the games are opened, she can pass without any extra taxes, but you won't travel 4-6 hours to buy a pair of games.
Now, in the Mexican eShop, the games costs are equal than in the stores, but I know that she can enter into the USA eShop by changing Language and Region in the System Settings, then buy games at the price of USA, for what I know, Game Planet is selling now these Card Points at their normal price, $200, $500, etc. maybe that could be her solution.
I could tell her some stores who sell phisic games at USA prices, but they are in the center of México, and with the shipment could be the same thing.
Good luck with that ;D I hope she can get their games
And sorry for my spelling horrors