Black Friday deal from Boost Mobile. Note that the extra 23GB of data applies to the first five recharges only.
Cashrewards is offering these cashback -
Cashback on $30 Prepaid SIM: $12.00 ($3 after cashback)
Cashback on $40 Prepaid SIM: $15.00 ($5 after cashback).
All Boost Mobile plans are 28 days. There is also a $2 upfront cost for the $50 and $70 plans.
Great deal! Worth noting that Boost has full Telstra 3G/4G coverage (albeit with a speed limit of a measly 100mbps) unlike other MVNO's such as Aldi/Woolworths who use Telstra Wholesale (where coverage in general is limited to be similar to Optus/Voda).