JB HI-FI are doing it even cheaper now for $299 - which is the cheapest price ever according to Pricespy. RRP is $639.
This is a great mid-range fitness watch, and at this price range it's pretty unbeatable in terms of features and quality. I have one myself and it's pretty neat if you're into running and fitness. It has some great features such as onboard GPS and onboard music storage/playback so you don't need to carry a smartphone with you while tracking your runs.
There are also white or aqua colour options.
You could also try get Rebel Sport to price-beat this for another 10% off.