I just came across this deal whilst on Kogan. It seems the price has dropped again.
Iphone 5C is listed for $559 + $22.99
Pink, white, green and blue are all the same price.
NOTE: To all the fan boys wanting to sell their iPhone 5 to 'upgrade' to a 5C, keep in mind that these phones are essentially identical. The main difference is the 5 has an aluminium shell where as the 5C is plastic and colourful. I'm not an iPhone user, so please correct me if I'm wrong.