Australia - next day or two?

A month ago, we sent 2 fuel bladders - new and empty ;D - to Australia, just knowing they would arrive in time for a customers around Oz trip, but alas, they have not arrived, despite having left SA...

If anyone is going to Aus, especially NSW, we would REALLY appreciate taking with two, empty, flat, packaged fuel bladder, about 500grams each, and WE would then work out how to get it to the customer...

thanks
Chris & Team