Just received a price drop on this. Unfortunately only the Sandstone colour watch band version is of this price ($399) and all others are still $499 listed on Kogan.com. Also note that this is the non-music version, i.e. does not contain storage to stream music to your Bluetooth device. However it can be easily (and often cheaply) fixed with replacement band on eBay or other market places.
Snippet taken from the page:
Running is more than just exercise – it’s a performance. The Garmin Forerunner 645 has the tools to help you put on an outstanding show every time you lace up your shoes.
- Make payments with your watch
- Provides advanced running dynamics
- Uses wrist-based heart rate to offer performance monitoring features
- Customise with free watch faces, apps and more from Garmin Connect IQ store
- Battery life: Up to 7 days in smartwatch mode, 14 hours in GPS mode
Note that it's a "Direct Import" product, i.e. grey import from overseas, but Kogan would have taken care of the GST. Free shipping with Shipster. As a running watch it's ~$100 more expensive than FR235 but comes with quite a few more sensors, faster processor and generally newer tech.
A good price - but the music version was available for only $27 or so more just a couple days ago from Ryda on Ebay with code.