Just found this on the shelf at the local IGA (Strathfieldsaye, VIC) but is likely to be in other IGA stores as well.
4 x 500ml cans of Monster Energy drink (Green - No other variety on display) for on $5.39
(Listed 'WAS' price is $11.89 but is often reduced down to $7.99)
Thought it might help a few ozbargainers get through the early morning starts at the Boxing Day sales.
That equates to approx. $1.35 per can. Nice find OP! :)