Shipping heavy items around the world is indeed expensive.
I made up a parcel of wads and round balls for a friend in Yakutsk - so he could load his round balls for deer, rather than have to use buck shot which led them for miles of chasing wounded deer. In 3' to 4' of snow, that's difficult. The box was 10 pounds, as well as being 10" all sides, a cube. The cost quoted me was $340.00 from Fed. Express as that was the only outfit I could find to shit it. I did not send the 'under' $20.00 worth of materials to the lad.