If you see the plans and pricing are listed in USD, it means that you are on the Trimble SketchUp (US) website.
If you are residing in Australia, you should always buy from BuildingPoint SketchUp Australia. This is because not only are we offering you the lowest prices but also providing you with local support in your time zone. See why buy through SketchUp Australia?
You can tell if you are on our BuildingPoint SketchUp Australia website by the browser url (sketchupaustralia.com.au) and also by the listed currency in the pricing, which should be in AUD, not USD.
If you have somehow bought in USD, see how to switch to AUD.