I think your agent is a FRAUD.
Why would he/she suggest TSS 482 Visa for you eh hindi pa po kayo AU RN? I think if alam talga niya yung details ng 482 TSS visa alam niya na requirement of that visa is may skill ka na accredited/ackno ditto sa AU. for nurses, you have to undergo Bridging or conversion to become AU RN.
Just saying.