There's an overview with data and sources in another section of the website [1].

I think the key difference in Australia and USA is that the Australian government, due to our extensive Medicare coverage [2], bears most of healthcare burden for smokers. Thus, for Australians, paying for smokers' medical costs nearing their end of life is more expensive than keeping them healthy.

[1] - http://www.tobaccoinaustralia.org.au/chapter-17-economics/17...

[2] - http://www.sbs.com.au/news/article/2014/02/20/how-does-austr...