Additional Currencies Accepted
With the recent international expansion of In-App Payments, we’ve expanded the types of currencies accepted so you can sell your goods in your customer’s native currency. For example, if you’ve set up shop in the United Kingdom but your customer base is mostly in Japan, you can specify prices for your good in Japanese Yen and Google automatically handles currency conversion for you.

Supported currencies for In-App Payments are:

EUR – Euro
AUD – Australian Dollar
JPY – Japanese Yen
NOK – Norwegian Krone
CAD – Canadian Dollar
USD – United States Dollar
DKK – Danish Krone
SEK – Swedish Krona

To use a different buyer currency, just specify the currency code in the JWT request:

Card Details Minimized
In order to purchase through In-App Payments customers must first create a Google Wallet account, but entering payment information can be cumbersome. So, we’ve cut the amount of information that your customer has to enter when adding a new credit card to their Google Wallet. Now customers in many countries only need to specify their postal code instead of a full address, making the experience of creating or updating a Google Wallet quick and painless.

source: [Google Commerce]