Coles special $15 for for a $40 Boost Sim kit.
This cannot be added to an existing account, looks like new customers only.
I can't find it advertised anywhere, not in the store I went to or the catalogue. Only advertising from post below on whirlpool in Adelaide.
credit to "ohmygod" on whirlpool: https://whrl.pl/Rf0LdV. Verified 30 mins ago (my receipt attached)
note: Bananas for reference!