Been looking for a 200Gb+ plan for mum, and came across this.
"Enjoy 250 GB mobile broadband data with no contract and no fixed line."
Uses Optus 4G network, and uncapped.
Recent deal was $20 extra
Chat said no expiry in near future.
Still hanging on for an Optus deal for around the $60p/m for 200GB and a tablet :) but may succumb to this especially being no contract.