I think most that live in Australia used to buy the X-Star from dealers in the US as Autel would not ship internationally. Now that the X-Star is discontinued I really do not think you would find a dealer with one in stock. You might find someone Australia that might want to sell theirs. Ask some of the Hobby shops as they might know of people interested in getting rid of theirs.
Think you are going to have a hard time finding a new one.
You might find a member on here wanting to sell theirs and willing to ship it to you.