From the upcoming Big W catalogue starting 29/08. Maybe can pay with WISH gift cards to get another 5% off. Update: Comments suggest it's not possible.
Cheaper than direct from Boost.
- UNLIMITED Calls & Text to standard numbers
- UNLIMITED INTERNATIONAL standard calls & text to 25 selected destinations +1200 standard mins & text to 30 selected destinations
- Stream Apple Music Data Free
Are you certain one can pay for vouchers with a Wishcard?