Some Dan Murphy stores stock Dextrose, the ones that sell home brewing supplies. Very cheap too.
I found Dextrose for $2.95 per kilo bag at a local brewing supply company. Its called Clever Brewer and is located at 7/188 Chesterville Rd Moorabbin.
I am in Brisbane and get my dextrose (Brigalow brand) from Woolworths supermarkets in the home brew section.
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