I also must be a snob, because I am one of those people who sorely misses REAL cheddar cheese. No, I don't have to stock up on things that can be bought here although I certainly have some things that I miss and try to get when I can. I think it comes down to things that you grew up with and miss.
I used to manage a cheese counter in the States, and consider myself a cheese snob. Yes, there are some excellent Argentine cheeses available, but I'm sorry there is no real cheddar. I have eaten cheddar since I was a kid so for me it's something I really miss. Actually, if we really want to talk about cheese, in reality the States and Argentina pale in cheese selections when compared to the variety available in Europe. Now, for those of us who have are foodies or who happen to have incredible cravings sometime for certain favorite foods then that is ok. I happen to be one of those people who has a distinct sadness that REAL cheddar is not available here. Regarding olive oils: I think that there are actually some good olive oils here, but my preference usually tends towards first cold pressed oils and I tend to buy the more expensive ones. I don't particularly like the Spanish oils I've had as I've found them to be quite bitter. I've seen some great Italian oils and yes they are pricy but if you really enjoy food then they are worth the splurge, and then you can always pick up a cheaper oil for cooking.