7-Eleven $1 day - buy selected products for $1
$1 Mt Franklin 600ml bottled water
$1 Mars Bar (medium)
$1 Kettle Chips (100g)
$1 Four n Twenty Snack Size Sausage roll
Said there is a limit of 8 $1 items per person (in case you were hoping to buy 10 mars bars???)
It's at least in Sydney and Melbourne - possibly in other states as well.