Saily does not provide a truly unlimited high‑speed data eSIM for Australia. The only plan that carries the “Unlimited” label is the Australia UNLIMITED 15 days plan, which gives 5GB of high‑speed data each day; after that daily allotment the speed is throttled to 1024kbps, so it is not a permanent unlimited offering.
For travelers needing more data, Saily offers several fixed‑data plans. For example, the Australia 20GB 30 days plan costs $29.99 USD and the Australia 10GB 30 days plan costs $17.99 USD. Larger regional options such as the Asia and Oceania 100GB 180 days plan or the Asia and Oceania 50GB 90 days plan are also available and provide consistent high‑speed data at a fixed price, which may be more cost‑effective for heavy data users.