I am a wine lover and I had the chance, in France, to taste expensive bottles (Mouton Rothschild, Mission Haut Brion, etc ... bottles around 500 USD).
When I arrived here in 2003, I discovered how good are the cheap wines here (cheap ones : the one we find now around 20 to 40 pesos). And while it is possible to find in France good cheap wines, overall Argentine cheap wines are much better.
Nevertheless in 2003, due to the devaluation, I bought an expensive bottle of Catena Zapata (was 280 pesos in 2003, I guess the same bottle costs around 800 now) and I was not amazed at all, french expensive wines are way much better.
Speaking of imported wines here, I celebrated yesterday my birthday so I bought at Jumbo, one bottle of Chateau Signac 2001 (a french "cotes du rhone") for 150 pesos and a bottle of Fond de Cave 2005 "Réserve spéciale" for 95 pesos.
No need to say that the Fond de Cave was much better.
The 150 pesos french bottle is typically an export wine, and the same bottle can be found around 10 to 15 dollars in the US, therefore it is damn expensive here.
At Jumbo, apart of this french bottle, there were three other french wines and the same problem occurs : export wine, priced three or four times the US price tag.
Nevertheless my situation is particular since I'm french, so after all I enjoyed the french wine although it was priced too high.
I can understand the need for wines from abroad, it's just that it does not make sense economically at all to buy them, at least in Argentina.