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Optus: 50% Cashback on $220 300GB 365-Day Prepaid SIM @ TopCashback AU
Posted 6/22/2026

Optus: 50% Cashback on $220 300GB 365-Day Prepaid SIM @ TopCashback AU

MobileCashbackOptus

Score a massive year of connectivity for just $110 after cashback! By grabbing this Optus 300GB Prepaid SIM through TopCashback, you’re effectively halving the $220 sale price.

  • Includes a massive 300GB of data, 5G network access, and international calls.
  • Perfect for new Optus customers wanting to switch to a reliable yearly plan.
  • Heads up: Make sure to disable ad-blockers and VPNs before purchasing to ensure your cashback tracks correctly!

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