Not really a competition and I had a lot of trouble finding a "participating" store.  I read about the offer here: https://www.dailymail.co.uk/femail/article-10713037/Coles-giving-customers-free-99-Vittoria-coffee-machine-limited-time.html that started yesterday and finishes on 24th but when I went to my local Coles yesterday (Kawana) they'd not heard of it and suggested contacting their Customer Care Service. I did that asking where participating stores were in my area and this was their reply:   Only selected Coles Stores participates on this promotion. Customers who purchase 6 Vittoria Espressotoria Capsules are then eligible to redeem the free machine valued at $99. Keep an eye on your local store to see if this is a participating store and have a great week!, no mention of which store. I asked again and got the same reply so started ringing around the Coles on Sunshine Coast. Finally Maroochydore (after initially having no idea) discovered the promotion material had just gone up.  Vittoria themselves have a similar thing going but you have to buy 12 packs of large pods $9 each.  My daughter got the machine for me last night and said she had trouble, the cashier wasn't aware of the promotion when she took the packets to check out but eventually was given the machine after purchasing the required number of packs. The article says 12 packs but my daughter said the promotional material says either 6 pack or 12 pack.
https://espressotoria.com.au/pages/free-piccolo-espresso-machine