DH just told me that when he did night fill at coles (a few years ago mind you) the pay was about $16-18p/h.

Plus he said that you get extra when you work past midnight, but since coles are such tightar$es, they give you a shift from 9pm - 12am so they don't have to pay you the extra.

So i would assume that the rate would be around $20 an hour.
I like Chloe's idea of temping though.. that sounds great!!