Saw an ad on Instagram for the iPhone SE on a plan. Minimum cost is $584 so could essentially cancel before the end of the first month and get the phone outright for a good price.
Total minimum cost is one month of your plan fees plus 100% of the MPP instalments of your chosen device. If you choose to cancel your Vodafone Infinite Month to Month Plan, your MPP will auto cancel and 100% of the remaining handset instalments will be applied to your next bill. Recurring monthly plan fee charged until the end of the month in which you cancel.
The seem to have brought this deal back: https://www.ozbargain.com.au/node/558390