If the study below is right, placing Sydney as the second city in the world behind Zurich in domestic purchasing power, what you claim doesn't seem to be true either (actually it appears to be the contrary of what you wrote, with an exceptional take home by world standards ) :
http://www.smh.com.au/national/dont-worry-be-happy-sydney-is-not-so-costly-20090819-eqld.html
http://www.citymayors.com/economics/usb-purchasing-power.html
http://www.smh.com.au/national/dont-worry-be-happy-sydney-is-not-so-costly-20090819-eqld.html
http://www.citymayors.com/economics/usb-purchasing-power.html
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