Marc,
I have looked at alternatives to using Canadian Geese flying to Australia, for the 2 Kg parcel, and the cheapest is Australia Post $57, Canadian Post $108, Inter-parcel $175, Pack and Send $175, and the highest by a high margin is UPS at$240.
But wait there is more! DHL rang this morning as I could not get an on-line quote last night and it is a whopping $400!!! for a $80 part! I politely declined the shipping!