According to the UFC,

the Australian event, UFC 110, was the second fastest sellout in the UFC's 16 year history. This will be the first UFC event in Australia, and all 16,500 tickets at the Acer Arena in Sydney soldout in just a matter of hours. Only tickets for UFC 83 in Montreal sold quicker.

The ticket sales are another strong indication of the popularity of MMA in Australia, and we are confident that this bodes well for more UFC events to be held in Australia.