It was a popular deal expired at the end of August and I've just received email saying that the Click & Collect offer has been extended.
Offer extended: Get $10 off your first grocery order with Coles Online when you spend $100+ and use Click & Collect. Promo code: Click10!
You get free delivery when you spend $100 or more (new customers only). However if you choose Click & Collect you'll be able to get $10 off. Not too sure when the promotion will last this time.