Problem is, Rhino will not be sending the boxsets -- WE WILL.
I will probably sound like a cheap bastard, but unless the winners are ready to pay for the shipping, I'm not particularly interested in paying to ship packages like these (not one CD, but FIVE + booklet, etc.) as far as in Australia, New Zealand, Asia or even Europe, espcially if you consider that we'd be paying for sending a beautifil GIFT to perfect strangers after all! :)
Asking the winners to pay for the shipping would be complicated in the way that we would have to go to the post office first, then ask how much it would cost for each destination, and then wait for the money to come from another part of the world before sending it. Very complicated!
ON THE OTHER HAND, it would also cost a certain amount in the U.S. and Canada, and we might decide to ask the winners to pay for the shipping ANYWAY. So it wouldn't be so much more complicated to open the competition to everyone all over the world after all.
So if you're ready to pay for the shipping, I'd be ready to give it out to anyone, without distinction of where you live. 
What do you say?