Need help getting an Australian SIM card

Hi all! I know lots of Singaporeans are travelling to Australia this month so I'm hoping to get help to buy an Aussie SIM card and bring it back to Sg for me.

I used to live in Oz for nearly a decade so a lot of my stuff's linked to my Aussie number but my old SIM card was 3G and it's been decommissioned already. I've been back a good number of years now, and I haven't had to use it for a while, but recently I realised that I need my old number in order to authenticate some logins, and I can't do that if I can't receive SMS or WhatsApp messages on my number.

I would really appreciate if someone can help me get any blank Amaysim SIM card (I think they cost $2). I don't need the ones with any value on them since I'm still on a pay as you go postpaid plan. I think they're available at most convenience stores/ supermarkets. I'll come and collect it from you when you're back in SG.

Here's a list of where to get the SIM cards.

I would be happy to pay SGD$30 for your trouble. Thanks for reading!