Yes, I know. That's why I want to know the rate.
If you look at the 5th post in this thread, I've applied the Australia import GST to the distributor cost of the device.
In order to work out a formula, I have to figure out the difference between the Canadian and Australian (and other countries) import duties.
The Australian import duties are effectively 10%. If the Canadian is also 10%, then the import fees should not be a factor in the difference in the retail prices. If the Canadian fee is 5%, then there is approx $3-4 of additional cost in Australia.