I'm not sure where you could get P4 in Australia...but maybe someone In US could get copy for you..ship it out ? That might be feasible if you know anyone there ? Maybe it turn out a lil cheaper..but with AUD at 66cent to US dollar at moment, it still be pricey. But you should be able to pick up P4 cheaper now P5 released ( I'm in same boat..my creaky old system can't handle P5)