Found another bike deal. This time for the Quick 5 commuter bike for $549 (RRP $849). Looks like the green one is only available in the small size.
But the red is available in the medium size:
https://www.bikeexchange.com.au/a/flat-bar-road-bikes/cannon…
See review:
https://www.choosemybicycle.com/en/woc/expert-reviews/cannon…