So I was in line at my local Coles in Gosford buying lentil patties, when I notice the old lady in front of me was buying mars bars. I thought it was odd her buying so many of them so I watched the screen to see the price of each of them, as I felt like a mars bar anyway. They scanned as 1 dollar for all 4 of them. Wow! I was surprised of this amazing bargain, so I dropped everything I had and quickly ran to the confectionery isle to hopefully pick up as many as I could. I satisfactorily cleaned out every mars bar left on the shelf, totaling $5 for 20 mars bars. I then quickly snapped a picture in anticipation of uploading it on ozbargain.
It's worth checking your local coles to see if this is available to you.
If you're wondering how big the 40g mars bars are, look at the Mars Red Bars to the left of the normal ones. As they are 37g, the ones on special are slightly bigger.
Quite a nice story :p
These mars bar prices are getting cheaper and cheaper, however ive found most coles stores are cleared out.