Yes, Greece and Southern Italy seem to be ten times less expensive than Sierra de la Ventana, but when you factor the yerbamate importation fees and all the other delights of life in Argentina....With some of the crazy prices I have seen here, it is cheaper to buy many places in Europe(and I don't mean Eastern Ukraine!)
http://www.remax.gr/property/20760
http://www.remax.gr/property/55412?Property_page=5
In France however you can totally purchse overpriced yerba mate directly from Argentine-themed restaurants,
Since this is LoveG0d we're talking about let's try and find something in the least French part of France,
et voila!
http://www.remax.fr/Land-For-Sale-Kiffis-Haut-Rhin_118651018-1