I am not sure if this deal is targeted, but you have to be logged into your Microsoft Account and then click "buy now" icon for the "Microsoft 365 Family AU$129.00/year".
After clicking onto the link, it will go to the subscription confirmation & payment page, which will show the new purchase price of $90.30 (30% discount).
I just added another two years to my subscription.
Hopefully this is not a targeted deal.
Seems targeted, doesn't show up for me. Existing subscriber with around 2 years left.