This is the grey coloured one (cheapest delivered) and also a superseded model which is around A$590 plus delivery in Australia (the newer '2022' model is A$699 and has a more powerful 300 watt amp). There are also white and black ones at various different prices and even the shipping price varies (may vary depending where you are in Australia too).
You'll have to buy an Australian power cord and kiss goodbye to any warranty (too expensive to bother returning) as I can't see the Australian distributer being willing to help you.
I wanted a modest sealed sub (instead of ported) as my understanding (from watching a few YouTubes) is this gains accuracy with a loss of overall volume.
Actual costs:
Sub US$179.99 (A$264)
Shipping US$84.31 (A$123.70)
GST A$26.43
Total US$290.73 (A$426.52)
It's debatable if this is even worthwhile as there are good options for not a lot more locally like this expired Kef Kube deal:
"8″ Paper Cone Woofer" would be a no from me