I was in Italy over the summer and I bought one of these huge ones, I think it was like 55 normal jars worth, and probably weighed like 20lbs. And, when I was flying from Venice to Stockholm (Sweden to everyone who doesn't know their cuntrees) airpost customs took it away :(
Thus the sad story of my giant nutella jar that costed 55€
But I have a few of the medium sized jars at home right now so life isn't as tragic :D