Powerade Active Water Mango 12x 600ml $25.20 ($22.68 S&S) + Delivery ($0 with Prime/ $59 Spend) @ Amazon AU

Subscribe & Save price is pretty good if you need to stock up.

Works out to $1.89 a bottle and even less if you pay with discounted gift cards from Amazon. Cheaper than Coles or Woolies.

Usually dispatched within 2 to 4 weeks.