As far as I know, the yellow and orange flavour bottles are 50c, not sure about the others.
Took a picture of the shelf area :P
I bought a few, expiry is in Nov 11.
This was taken at Coles, Carousel WA - should probably apply to other coles as well I presume…
Yeh I know it's not great for health but 50c is a steal!
I'm a fan of the orange ones, because they are recommended for…ah, nevermind :)