shoesales.com.au flash sale - $45 and under list - plenty at $25 a pair.
Shoesales seem to be a bit confused as to when this promo ends. They posted it on their facebook feed 10 hours ago as a two day sale, so ending tomorrow night, but when you go to the promo page it says ending tonight. I'd say if you want something be quick.
You can apply the signup to the newsletter $15 off promo code if your order is $70 or more - see our shoesales.com.au promo codes page and free shipping applies.
I've written up a blog post on how to get yourself 3 pairs for $60 delivered from the sale.