voilà does not provide an unlimited data eSIM plan for Australia. All of its plans list a specific data cap, the largest being 50 GB for 180 days at $57.40 USD.
Travelers seeking a fixed data plan can choose from options such as 50 GB for 180 days, 20 GB for 30 days at $16.80 USD, 20 GB for 30 days at $59.50 USD that also covers one additional country, 20 GB for 90 days at $136.30 USD offering coverage in Australia plus 117 countries, or 10 GB for 30 days at $9.60 USD. These fixed‑data plans are typically more economical than paying per usage, unless a user consumes unusually high amounts of data.