Cheapest I ever seen 'em
$3 per 12 pack.
"Best Before" date September 2015
They look like they were left over stock from of some promo months ago.
But at $3 per 12 pack, I no complain
Spotted (and purchased) at Watsonia Road IGA, Watsonia, VIC 3087
This was listed as "Managers Special", and the 12-packs actually have the word "Promo" printed next to the Best Before date on the outer box
Heaps of stock (at least 50+ 12 packs in a stack near the entrance of the store)
Cheers. May be worth the detour.