Don't know, maybe they have a dealer in OZ?
Of course more expensive than USA.
Problem is that sending this stuff from outside of OZ to you will be pretty expensive because it is not small.
eforeigncarparts usually orders parts in Europe from several suppliers and then ships all by the container to US, that is much cheaper.

BTW: what hapened to the production of the spoilers in OZ, someone wanted to make them, forgot the name?