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Boost Mobile 80GB 28-Day Prepaid SIM $12 (Was $39) at TopCashback AU
Posted 11/3/2026

Boost Mobile 80GB 28-Day Prepaid SIM $12 (Was $39) at TopCashback AU

MobileBlack FridayBoost Mobile

You're getting a solid 80GB prepaid SIM for just $12, and after the $5 cashback it drops to $7 — a big saving on the $39 price.

  • Must activate the SIM within 30 days of purchase
  • Buying multiple SIMs? Do each as a separate transaction, or the cashback may not track
  • Cashback isn't valid on eSIMs, recharges, phones, bundles, accessories or $2 SIMs
  • If you want an eSIM, order the physical SIM first, activate it, then convert it in the Boost Mobile app — you'll need to pop it in a phone to get the authorisation SMS
  • Nothing in the current T&Cs voids your cashback if you switch away after 28 days

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