I suppose comparing different cities then $12 is good, but when you know a box lands here for just over $100 aus possibly plus shipping, then to sell a couple of boxes at over $100 profit instead of making smaller profit per box, but increasing your buying power due to selling a higher number of boxes, then i reckon its plain greed, due to the store being a big fish in a small pond.
Anyway i dont think i need to sprout basic economics here.
Your point is taken.