It's one of the most expensive piece of crafted polystyrene you can buy but it's now on sale. I was shopping for a lid and came across this.
This is the newer MIPS version that supposedly sells for north of $400. Only available in this colour. All three sizes available atm. There is a 20 % off sale on the Strava shop at the moment which brings the price down to $309.80 delivered. I haven't bought a helmet from them before but it appears you can select the Australian version which should come with the Australian standards sticker.
or get one for $5 at 7-Eleven… :)