Found out today that Argentina is opening their own exchange. It could be a very good alley to get Bitcoins to them.
Here's the exchange:
https://www.coinmelon.com/but as OP stated the trick is to get btc in in the first place. also this is good for the btc price worldwide for a variety of reasons. perhaps someome from Argentina could answer: is it possible to reliably ship a package out of the country? if so we could create an ebay like site but only btc and argentinian goods.