Android: Once you select your international store, you will be charged the currency of that international store. Should you wish to avoid bank charges related to exchange rates, please purchase in your local zinio store, where we stock all international magazines. Please note that in additional you will also be charged VAT at check out based upon your billing country (until check out you will see local store VAT indicated by "local VAT included")
iTunes: Irrespective of the international store you will be charged in the currency of your iTunes account + VAT from the iTunes country. To be charged in a different currency sign up for a new iTunes account adding a credit card from that country
ZINIO.com: As a signed out user you will see the currency and VAT of the international store in which you are browsing. Once you sign in both the currency and VAT will be updated to that of your billing country. Should you wish to be charged in another currency please pay with a credit card from that country.
Note: Brazil, Argentina and Mexico newsstand currency is USD (not local currencies)