When should a cashier check for price discrepancies during a transaction?

Checking for price discrepancies right after scanning each item is considered the best practice for cashiers during a transaction. This approach allows immediate identification of any issues related to pricing, which can enhance customer service and ensure accurate billing. By addressing discrepancies as they occur, the cashier can maintain a smooth and efficient checkout process and quickly resolve any concerns a customer may have. If the prices don't match the expected values, it provides an opportunity for clarification or correction before everything is finalized, leading to a more positive customer experience.