I recently noticed that I could pick up a glass jar of imported Nutella at a local specialty store, but it was $8.99, almost 3 times the price of the US-produced version in the plastic jar that's commonly available.
The difference between the two shows in the ingredients: the US product lists partially hydrogenated peanut oil (a source of trans fats) and the European version doesn't. So if that sort of thing matters to you, now you know.
I haven't done a head to head taste test but the European version sure is good. yummmm.