I don't think that this is a simple question or a simple answer.
There have been many threads bemoaning the rapidly increasing costs of international shipping.
For a relatively small keyboard to a nearby country, I can ship for $40-50 which seems high. For anything else, the game board box via international priority mail flat rate is $78 and that is about the only deal going. Of course I can ship 2 Model Ms from Atlanta, Georgia, to Tasmania for that price, so that is something at least.