Cocobella Coconut Water Straight up, 6x 1L $15 ($13.50 with S&S) + Delivery ($0 with Prime/ $39 Spend) @ Amazon AU

Back on sale!

About this item:

Pure natural coconut water
Natural hydrating
Rich in 5 key electrolytes
No preservatives
Zero fat

Edit: Added the following courtesy of penguinswillrise and ThatguyfromCBR respectively:
Watermelon & Mint
Chocolate

S&S = Subscribe & Save, you basically get 10% off on top of the listed price. You can cancel S&S after your item has arrived.

Enable registration in settings - general