Overstock is the other side of a stockout. Clear it with a sitewide sale and you pay twice: once on the stock and again on every full-price customer who learns to wait.
When a forecast misses high, there’s cash on a shelf and a strong temptation to run a sale. The sale clears the stock. It also discounts everything else in those orders, and teaches your best customers something about your prices.
Say a brand normally sells $100,000 a week at full price and is sitting on $40,000 of excess inventory at retail value in one product line. A week of 25% off sitewide lifts revenue to $150,000. Suppose the overstock line sells $30,000 of that. The other $120,000 includes the orders the store would have taken anyway, which would have brought in $100,000 at full price and now bring in $75,000: $25,000 given away on orders that needed no discount. Some of the extra sales were pulled forward from the weeks after. And the customers who bought at full price last month have learned to wait for the next one. That last cost is the subject of The First Offer, which covers discount training and the sale calendar; read it before your next clearance.
A sitewide sale clears one product by discounting every product.
Excess stock is rarely excess to everyone. It’s usually excess to your forecast of new-customer demand. The people most likely to want more of it are the people who already buy it.
This is one chapter of The Catalog, which is free and readable in full on a single page with no form in front of it.