Looks like competitor is heating up and today VIVIFI (Singtel MVNO) has a new plan at $7.70/mth.
It comes with 100 GB local data, 300 local minutes, 100 SMS, 2 GB roaming for Malaysia, Indonesia, Thailand, philippines Taiwan and India.
If you are not on Singtel, heya or Gomo, you also get 3 mths of 5G (trial).