Even prior to fingerprinting and biometrics almost all countries use name and date of birth as their initial check, knowing full well that passport numbers change frequently and that some people have more than one nationality.
tax exempt super pensions and below the tax free threshold is irrelevant as far as Centrelink entitlement is concerned…they are just concerned with the amount of income and eligible assets.
Did it last week price is 3800 baht. They know all the requirements, ask what plane, where you are going and they ensure they meet the 72 hours requirement. Seen by a doctor, and you pick up two copies of a fit to fly certificate that details the type and -ve Covid result and lack of any other symptoms. You pick up the certificate less than 24 hours after the test.
My certificate taken this week stated the exact time the swabs were taken and that was the effective date. I went in the other direction and the SIA check in counter at Bangkok verified the swab date with the first leg departure time to satisfy the 72 hour requirement.
Don’t forget you will also need permission from the Australian Government to leave as well. This of course will change at some point but currently I understand over 80% of applications are refused.