Managed to pick up some past-used-by-date Tooheys Draught for $3 from the Warehouse, Brigalow Yeast for $1 & Brigalow Dextrose $2.60 from BigW and made 23L for 7bucks.
Works out to be 11c a stubby, or $2.74 per traditional slab.
Drinkable? Just better than a VB - So Yes, and definitly cheep ...