Developers in Argentina have begun receiving letters from Google informing them that "Google Play will no longer be able to accept payments on behalf of developers registered in Argentina starting June 27, 2013." The change applies to both paid apps and apps that use in-app purchases. The move appears to be related to new, restrictive regulations the Argentine government has imposed on currency exchanges, which The Telegraph detailed this past September.

Android customers in Argentina will still be able to purchase apps in the Play store and developers from the country can continue to offer free apps.

Via: http://www.theverge.com/2013/5/24/4363960/google-no-longer-able-to-pay-developers-in-argentina-for-apps-pulling

Interesting thing is how Google presented it as goverment fault.

In fact, they can perfectly made currency exchange outside Argentina without any restrictions (and they do for purchases).