Choose any $1 item from the student bean catalogue to get above $80
https://www.ozbargain.com.au/node/887541
Alternatively Atrix - Micro SD for Nintendo Switch 2 - 512GB for $108.95 delivered with the same coupon
https://www.ebay.com.au/itm/306334118839
IMO good deal since these are around ~$79-ish