EDIT: The offer is actually 15 bottles for $15. You have to buy 15 to get the $1/bottle deal.
EDIT II: Ashfield also is carrying the offer BUT have no stock. Looking at the ticket, it looks to be on offer till November 5th.
Usually you'd find it for $2.89 per bottle. Unfortunately i don't have a picture of this bargain but i picked up a box on the weekend - they come in 15 bottle boxes.
(No i don't work for Coles, it's my local)
I thought this was wine until I wikipedia'd it.
"In 2003, the price of 75 cl San Pellegrino bottles reached US$10 in the restaurants of New York City, where 65,000 bottles are sold every day."
Must be good water then!