Received an email from Coles FlyBuys about this deal. Seems to be targeted. For me it is $70 spend per week.
WEEK 1: Fri 3 Jul to Sun 12 Jul 2020
WEEK 2: Mon 13 Jul to Sun 19 Jul 2020
WEEK 3: Mon 20 Jul to Sun 26 Jul 2020
WEEK 4: Mon 27 Jul to Sun 2 Aug 2020
$100 for me. I rarely spend more than about $40 a week at Coles, so that's a big nope from me.