Delivery in Jan, so not in time for Christmas and Not the lowest it's been (was about $30 less in September via Amazon UK) - but this is for 4 colours (white, pink, black, sliver).
That said, lowest price for the US product according to CamelCamelCamel and for comparison JBHIFi is $579.
Features: Touch Screen, GPS, WiFi, Bluetooth, Water Resistant, Sleep Monitoring, OX Sensor, Heart Rate, Smart Notifications, Music, Garmin Pay.
Personally trying to decide if I get this or wait for boxing day and get local. But wanted to post incase useful for anyone else. Feedback welcome.