Take out new vehicle insurance (car, SUV, van - but not motorcycle) policies with Cove Insurance before 31 October and receive a $50 Prezzy Card.
I found this company to be at a slightly higher price point for a comparable policy than Trademe Insurance, but was swayed by the deal. Plus the company is Kiwi-owned, which may be relevant to you (personally don't care!)
No fixed-term contract and the policy is on a monthly basis, which means you could take out a policy with the maximum excess and minimum agreed value and potentially spend much less than the $50 value of the Prezzy Card.
There is also a referral system in place which provides either a free month of insurance (up to $100 value) for both purchaser and referer.
Use referral system below.
Your first line says "September" should be "October"?