This one time at a supermarket, they had an offer on Carlsberg Ice beer in 440ml tins. Now we use those clear poly ring things to keep four tins together and they were all stocked on the shelves.
So usually you can buy the beers in 24 packs, 18 packs, 12 packs, 6 packs or singles. Well Carlsberg Ice is a premium beer and was really nice, but damn hard to find.
My friend was coming up to mine for the usually saturday night beer fest and playing Pro Evolution Soccer as the mighty Wales taking on the best in the World on the harder levels. This would usually be 15 mins per game of shouting abuse at the screen, at each other, drinking more, more shouting, more drinking.
So, I saw this carlsberg ice and thought awesome. They had an offer on 99p per tin. This was really nice and 99p per tin was very reasonable. So I thought I'll grab about 12 tins. So picked up the beers which were stacked on the shelves in fours. THey'd probably opened up a stack of 24 or something which were 6 4's .
So went to the tills with the other shopping, I was packing and as I noticed the woman scanned 1 tin on each 4 pack. So I was paying 3 x 99p. I packed them, and then said. "Excuse me, would you mind if I just went and got some more, I dont think 3 packs will be enough for the party". She said no problem. So went back and grabbed another 10 4attached tins. She scanned then again as 99p per 4.
So, i didnt do too badly. I was contemplating walking to the car whether I should go back in and get more.
lets say, I went back the next week and tried it with 3 4packs. This time the cashier charged me for 12.