Shipping to Australia using Canada Post "Small Packet" costs $6.79. The "light packet" costs a little less but all of the stones may not fit into that size. This is the same where it is insured but does not have a tracking number. I can check on pricing for shipping with tracking but it will be significantly more.
I will PM you with additional info.
With all of the stones in this thread (except the citrines) now being bought, I am going to start a new thread shortly.
SOLD - ALL (but the citrines)