I think they have this period where there is a promotion that if you order more than a certain amount, the shipping is free, anywhere in the world or something (Not too sure).
For sure, I have shipped it to the US during those promotion and paid no shipping fee at all.
But in other times, I have also paid as much as 50 Euros when I shipped it to Singapore...
For me, the astronomical price (Both from the product and shipping itself) is worth it because store.inter.it do the BEST printing job and anyways the profit goes to Inter.