Just spotted this, finally a decent discount from Telstra.
From Telstra: Get $50 off a Pre-Paid SIM with 200GB of data for use in Australia, plus unlimited calls and texts to standard numbers in Australia. Limit 2 per account.
If you price beat at officeworks you can get it for $237.50. Then using the current deal on Celebration gift cards at Coles (https://www.ozbargain.com.au/node/744614) you can reduce by another 15%. This brings it to $201.88. Bargain!
Or get this - Boost Mobile: $50 Cashback on $250 12-Month 260GB SIM @ Cashrewards