They do ship corals from OZ. They are, in my experience, more expensive than corals shipped from other locations. At the wholesale level they tend to put restrictions on some pieces ie. to buy a single aussie gold torch you must by 6 green torches etc etc. I would expect something labeled "Aussie" would be more expensive in a retail setting. Is the piece really from OZ? How much do you trust the seller. I have never purchased a coral just because it had "aussie" in front of it. When I make a purchase I look at health/color/seller etc. I also always ask how long have you had the coral. Personally I am not interested in buying anything from a retailer that "just came in". No matter how nice the piece, the risk of the coral dying, not to mention pests and eggs, is much higher than buying a piece that has been tanked or farmed in an aquarium for a long period of time.
PM me if you are looking for nicer leathers/Zoas/shrooms at way better prices than what I just saw on the site mentioned above. The most recent softy added to my tanks was 9 months ago. All The rest have been thriving for years in my system....