Louisiana style pork spare ribs come in at $6.99/kg which is by far the cheapest (and best) i have found. Others around will sell them cheap but have very little meat on the bone. These are full of meat. Dan assures me they always have these in stock and can supply upto 150kg at a time

I am in no way affiliated with this butcher, simply posting my experience with them. You can contact Dan direct on (07) 3288 2155
Steve