I dunno, there are certain items we go through faster than others so I can’t always get things on sale. If I see a sale I’ll take advantage of it, but otherwise I stock my pantry as neededI think it's best to have a well stocked pantry full of goods that were bought on sale. You can save lots of money that way. But I think the key to the method is the rotation. That is where we fail at my house.
I would like us to practice the FIFO method, First In First Out, so that the oldest stocked goods are used before the newest supplies. In reality, we live under the FISH method, First In Still Here, as all the old goods get shoved to the back of the cupboard shelf.