Was in Costco the other day and was looking at the Oils. If you look at a bottle of Bertolli and read the label, it says Olive Oil Flavor. Costco carries the Kirkland Brand that's average. They also have a brand from Tunisia I think (has a yellow label) that is pretty good.

Most Italian Olive Oil for export is from Greek Olives. The Greeks export a lot of Olives because they can't process it themselves. Most Italian Olives go for domestic consumption I would imagine.

California from what I understand has some great Olive Oil. Might be a little pricey.

Balancing cost and quality is the problem with most consumers.