Oral antivirals, Lagevrio and Paxlovid are available on the Pharmaceutical Benefits Scheme (PBS) in Australia and are heavily subsidised. There are specific PBS eligibility criteria for antivirals and if you meet the criteria you can access antivirals at a minimal cost.
For those who are eligible under the PBS, COVID-19 oral antiviral treatments cost less than $10 for concession card holders, or around $45 for everyone else who is eligible.