Probably the cheapest currently at 30c per 600ml bottle. Would be $5.99 (20c each) for 30 bottles with the 10c refund per bottle.
Great for travelling, parties etc.
As a comparison, Woolworths and Coles brands are $8 for 24 x 600ml bottles.
Sourced from pure, natural springs in Australia.
Bottles made with 50% recycled plastic.