I saw this on the main banner at Coles Online, not the best discount but might be stackable with bonus points deals for some big spending households.
May be state specific but I'm uncertain.
Coles Online Terms & Conditions
$15 off your shop offer is valid only when you shop via shop.coles.com.au and spend $200 or more in one transaction. Valid after savings and discounts and excludes smoking and tobacco products. Discount is applied when you enter the promotional code SNACKS at checkout. Offer is valid on your next qualifying order placed until 11:59pm AEST 18 April 2021. Order cut-off times apply (incl. 1am Sat/Sun in some stores on weekends). Visit shop.coles.com.au for standard terms and conditions.