If you want a PSU from a brand with good reputation, and doesn't want to wait for long, and doesn't mind 750W and $29 extra, this is a good deal for you. It is listed as Tier A in PSU tier list.
Otherwise, https://www.ozbargain.com.au/node/686320 is the deal for you.
1%/2% surcharge applies for select payment methods.
Nice find!
I have an old PC which I replaced the PSU with the cheaper GB, but my next PC I'd put something like this in.