Certification: Australia:MA (2009) = BullXXXX

But it's available on DVD in Australia, isn't it?

It's been available to rent in Australia since August 2009 through Icon Distributors (http://www.videoezy.com.au/Movies/588d6409-f3aa-470d-b847-48d1086ce32c.aspx) so it makes perfect sense that it's certified.