Usually when companies do this it's to set different prices in different markets, e.g. to allow The Bureau to charge what is profitable for them in the EU without being undercut by Leffot. It's not really to their advantage to leave a market uncovered though, so I would expect that in Australia you would still be able to buy from somewhere.
Of course this doesn't take into account the various special make-ups, etc. Still, there's always proxies, ebay, B&S, etc.