Found this code for Circles.Life as I was looking for a new SIM only plan, seems ridiculously cheap for no lock-in contract. Just need to remember to look for a good deal in 6 months.
$20 waiver starts for the first full month, you pay full price in the first pro rata month, so remember to switch near the end of the month (this deal runs out end of Sept anyway).
Uses Optus 4G, calender billing months.
Critical Information Summary: https://circles-legal.s3-ap-southeast-1.amazonaws.com/au/cir...
$5 for 300 minutes International Standard Calls to 15 Countries
$10 for Extra 10GB/mth