In particular, be aware of the double sale. Since switching to the rewards card system (you only get the sale price if you have the store's rewards card with you), Shaw's has the habit of putting one brand of ice cream on sale each week. Occasionally they skip a week, but this holds true for the most part.
Have you ever noticed that the ice cream on sale seems to be the one with all the frost on it? Not every time, but take a look next time. Maybe it's from all the restocking, but I've always been a little bothered by this. You know you are really in trouble when you pick up the container and it squishes in your hand.
A double sale is when there are two brands on sale instead of the usual one. Sure, it could just be a fluke, but I can't help but think it's a little more sinister than that. Case in point: I went to Shaw's last night and picked up some Turkey Hill that was on sale for $2.99. I then went further down the aisle where people were crowding around 'buy one, get one free' Edy's (so, $2.75 a pop). I figured why not get more ice cream, but every single container I picked up had ice cream spilled out from under the lid. That's right, every single container was sticky. I put down the containers and went to finish my shopping. As I went past more Edy's containers, I noticed several other flavors covered with ice cream. Apparently the last pallet of Edy's fell over ...in the hot sun ...during lunch break.
Maybe I'm being paranoid, but I've seen this happen multiple times over the years. Any grocery store workers want to back up my theory? (sorry, i was a burger flipper, not a stock boy, so I have no proof)