mattwnz: Our government really needs to help small NZ companies out with finding a cheap way of exporting goods.
It's not actually that expensive in the scheme of things... unless your packages are small, or you want tracking.
I usually budget on about $30-40 NZD/kg sending from China via EMS (ie a tracked courier service, delivered by NZ Post). Sending to China by Airmail would be about the same sending by NZ Post - but no tracking.
It's just the small packages that are a real bugger, ~$13 to send 50g item to China.
NZ just doesn't have the small-parcel export volume to be able to make it possible to be cheap to export small parcels around the world, especially given our distance :-(
There used to be an Economy International service, but that was discontinued some years ago.