amaysim is doing a Lockdown Sale of talk & text plus 200GB of data for $20 for the first 28 day 'month'. It reverts to 80B/ $50 ongoing so all the value is in that first month. It could be a decent internet replacement for those that need it.
$14 cash back at both Shopback & Cashrewards so total minimum cost $6, assuming everything tracks OK.
amaysim uses Optus 4G network.
good luck trying to use all the data as optus network is so slow