Have a look here;
In NSW it's $1250 and 9pts if your caught with it in your car. However they make some very good consealed ones that would take some serious looking to find.
It won't work on some fixed cameras (like tunnels where it's strips in the road that trigger them) so you probably need a road angel as well.
NSW searching laws were updated a few years ago making it more difficult for a car to be searched. Now if you threw on the anchors they might have probable cause .....
Suitable excuse if your hassled might be sorry officer but my active cruise control seams to set off radars, sorry about that. You should ask BMW for a copy of their technical bullitin.
9pts is a large hit though ... but maybe it's worth it?