Magic Tricks

You might be able to get the cost of shipping by adding the product to your cart and going thru the checkout process. When shipping outside the USA, you'll get a dropdown menu with a list of countries which Australia is on.
This should 'expose' what your cost will be.
If reasonable to you, you can purchase.
If not, just don't finalize the sale...you get your price info, but the order is cancelled.
Best wishes...

You won't get that information on this public forum which PM does not seem to monitor. Best to contact customer service directly via email or through Live Chat if that is available (see lower right of your screen) when you are on line.