Just had a browse around the terminals (I get here early when my flights sting me this hard), and found a 'duty free' store at the Qantas Bag Drop in Terminal 1 doing some bloody good prices on chocolate and some other bits.
Chocolate coated cherries $5, Toblerone bags or sticks $5, chocolate coated macadamias $4, larger Lindt blocks $5. Loads more bits there too well worth a sticky beak and pretty good for a bargain at the airport!
Sorry I didn't catch the name of the store or a pic, to be fair it's a tad suss to take snaps of anything in an airport, regardless of death plague.
EDIT: Found the receipt!