Here's a reply I received from Asuma at Dan Murphy's. (I got sick of trawling the net to try to find a local supplier.)
"Bintang Beer is available at all our stores, however, you are more than welcome to call us on 1300 723 388 if you would like to verify stock.
The slab price is $69.95."
Slab price does not exactly compare to prices in Bali, but maybe I'll squash a slab into Al's Christmas stocking (he he).