Multiple Spintel deals up on their website. It's only a deal when it's discounted, after which not really.
Runs on the Optus 4G plus as an MVNO
$12 a month gets you 17GB, reverts to $20 a month after 6 months ($0.705/GB at discount | $1.17/GB without discount)
$20 a month gets you 50GB, reverts to $35 a month after 6 months ($0.40/GB at discount | $0.70/GB without discount)
4G Optus Network
No lock-in contract
Unlimited calls/text
NO ESIM
NO ROLLOVER (Like what?!)
Isn't Amaysim better with you're not currently on it?
https://www.ozbargain.com.au/node/728131