Added the prices for Mega 1-step Dragonstorm, as it has been showing up in most chains recently.
Kmart - 89 (was 99 - I don't know if it is a sale price, so I'll keep an eye on it)
BigW - 99
Target - 119
ToysRUs - 120
Toyworld - 160 (price might be different at different stores)

US retail price (before tax) is US$80, which is a bit over AU$100 (add another $10 for tax if bought in America)... so Kmart and BigW have a price that is cheaper than in America at this time.
Don't forget, even though it is a simple (expensive) gimmick toy, it has a black light gimmick, which is fun to use on your toys when you turn off the lights, to see which ones have reactive plastic and paint (not just the paint on the movie 1-step toys).