Remember that when you import goods, including from the USA, that the difference in currencies changes constantly, and that the rate you see advertised is the mid-market rate for that day.
Most banks will stick with their advertised rate for that day, but it could change tomorrow.
If you see a price in Australian dollars, from an Australian seller, posting to the Australian site, the price is accurate.
The price in Canadian dollars is approximate and may be higher or lower than the approximation you see today.
