This offer has been removed from the deals page as a targeted offer, but I think it needs some clarification and potentially stock level monitoring.
I note that the email that I received indicated that a $30 spend was required to be eligible for the offer.
After topping up my Opal card, I was not eligible and staff pulled out a communication which had the following (paraphrased) information on it.
The offer was sent out to ~352k people on Friday. There had been some people complaining about not being able to purchase the pack for $1 without the meeting the minimum spend requirement.
The T&Cs in the communication indicated that a $30 minimum spend on groceries was required.
Neutral Bay had no stock on Saturday night.
You can still buy it before 08-Oct if there is no stock,