PSA, NRMA has setup a new quoting system that applies a few different discounts - there are millions of customers that are eligible but it will not be applied until renewal, you can cancel your existing policies, and re-enter into a new policy to claim the discounts.
My prior monthly premium: $63
Premium with new discount(s): $36
May be worth just going through NRMA getting a new quote, using the same plate number, and just compare the two.
Happy saving :)
This is not just with NRMA but with every insurance/utility company out there. If you just accept the renewal quote, you are just paying for lazy/loyalty tax.