
If you’ve ever noticed cereal is “randomly” cheap one week and weirdly expensive the next, you’re not imagining it. Grocery stores run patterns, and when you learn them, shopping feels less like guessing and more like strategy. That doesn’t mean every deal is predictable, but many categories do rotate through discounts often enough to plan meals, stock-ups, and even coupon use around them. The payoff is huge: fewer full-price panic buys, fewer wasted ingredients, and more “I already have that” moments at home. Here’s how to tell which sales patterns you can trust, and how to build a simple plan around them without turning shopping into a second job.