Caffeine with wings fix on the cheap - Red Bull 2x250ml cans for $2, which works out to be $1 per can.
Limited Edition cans only - Blue, Red and Silver. I prefer the Red Bull Original, but when chilled & mixed these ain't bad either.
Spotted in Brisbane. I'm not sure if this is national deal, but highly likely because they're trying to flog leftovers of Red Bull Limited Edition for quite some time.
Fine drinks connoisseurs that haven't tried Limited Edition yet can look at some online reviews, e.g.:
http://www.bevnet.com/reviews/redbull
I saw them at Altona Gate, VIC as well.