Australia Electronic Travel Authority (subclass 601): Application, fee, requirements

Indians eligible for this visa or not?

India passport is eligible

2023 and just watched this - Philippine passport holder can apply 601subclass visa and travel to Australia?

Both me & my wife have bought return tickets to Melbourne mid October 2024 for holidays & visiting relatives. We applied ETA yesterday night in Kuala Lumpur using my mobile phone and paid AUD40. Within minutes, both of us gotten an email from ETA. She got an instant approval visa under subsclass 601. Meanwhile I received a pdf attachment requiring me to click immiaccount website link. After creating an account, I came across the option to apply various subclass. There was no 601, only option for 600 and others, which I then selected 600. I filled up and attached uploads totalling 19 pages before pressing submit. To my dismay, it was shown AUD195 that I need to pay before submission is complete. I came multiple times to Australia before pandemic. I owe no money to the govt as I am not a PR or citizen. But I have an unsettled traffic summon from car rental back in 2017 in Perth. So why is my wife having instant approval but me having to fill up the 1554 e-form and subjected to pay AUD195? Both us in the 50s so low risk of us working illegally or overstaying.