Deal: Boost Mobile: $90 Cashback on $300 290GB 12-Month Prepaid SIM @ TopCashback AU. Price: $90 AUD. Available at: topcashback.com.au. Location: Australia. Details: Cheapest Boost SIM currently at $210 (after cashback). Looks like offer ends at 6:59pm AEDT (ends in 5 hours), so could be a flash sale. 290GB for new activations. Includes International Calls …. Source: WhatsCheap Australia (whatscheap.com.au)

Product

Boost Mobile: $90 Cashback on $300 290GB 12-Month Prepaid SIM @ TopCashback AU

Price

$90 AUD

Retailer

topcashback.com.au

Country

Australia

Source

WhatsCheap Australia

Posted

26 February 2026