Goods and Services Tax is a tax that is required to be paid by consumers that live in Australia. The GST applied to our goods is 10%. If you DO NOT live in Australia you DO NOT have to pay GST.
The simplest way to be sure that you are viewing the price that would apply to you is to create a member account. Once you create an account with your correct address information, all you have to do is log into your account when you visit the store and you will automatically be shown a price inclusive or exclusive of GST, depending on your country of origin.