We use Norton Premium on 4 devices...but never ever do an automatic renew through the software. I think this is a 'lazy' tax rather than an 'Australian' tax...its easier to hit the renew button without thinking is it cheaper elsewhere.
It is far cheaper to buy licences online from third party retailers. Recently we bough a 5 device licence for under half of that buying renewing through the Norton website.
I start shopping for a new licence when the renewal notification first comes up.
Also, one can buy cheap licences n on eBay from people that have a version packaged up with a new computer. It is also worth noring that there is no differences between Mac and Windows licences and one can use either on either machines.
Last year we managed ro find a 3 device licence in Australia for under $30 delivered on eBay....was the 'Mac version' and the person selling didn't want to install it on their Mac...so sold it off separately. We installed it on out Windows and Android machines.
The other thing to remember when buying a new licence, which is a catch, that one only gets 12 months from the day of 'renewal'. Any remaning days from the previous licence is lost....it is therefore best to wait until the day of, or day before the current subscription lapses before renewing.....one heeds to be patient as the software does pop up continual renewal reminders.