Errors are quite frequent in a store with paper price tags – typically in the range of 5-10%, sometimes more. There are many reasons for a price error on the shelf. For example, tags can be missing, misplaced or not updated to the most recent price.
Many stores change hundreds or thousands of price tags every week, which is a time-consuming, error-prone and frankly boring task. When a larger batch of changes comes through, it can take many hours, sometimes days, before all prices are changed. Until that is done,there is a mismatch between the shelf price and the POS. If the price is too low on the shelf, the shopper can get angry when paying, and it also takes additional time for staff to handle the mistake. If the price is too high on the shelf, it might lead to lower sales than planned, resulting in a build-up of excess inventory.