The discount you cannot take back

Every promotion does two things. It moves some product this week, and it teaches your shopper something for next week. We obsess over the first and barely think about the second, and the second is the one that lasts.

Run a deep discount often enough on the same line and you have not won a shopper. You have trained one. They learn the real price is the deal price, and they learn to wait. The full price stops being a price and becomes a punishment for buying at the wrong time. You can see it in the data if you look. Volume spikes on deal and collapses off it, and the baseline you were trying to grow quietly sinks.

None of this means promotions are bad. It means they are a lesson, and you should know what you are teaching. A promotion that brings in a new shopper, or moves someone up to a bigger pack they then stay with, has taught something useful. A promotion that simply hands a discount to someone who was going to buy anyway has taught them to expect it.

So before you sign off the next deal, ask a plain question. What will my shopper believe after this that they did not believe before? If the honest answer is that they will believe the product is worth less, do not run it.

The fix is rarely fewer promotions. It is better aimed ones, with rules around how deep and how often, so the lesson stays in your favour. That is dull work. It is also where a surprising amount of margin lives.

I have rebuilt promotion guardrails for businesses that were discounting harder every year for less return, and the first win is almost always the same. They stop teaching the wrong lesson. The margin that follows is just the reward for paying attention.