The Competition and Markets Authority (CMA) says unclear pricing could hamper people's ability to compare products, and has told supermarkets to make their pricing clearer to help shoppers find the best deals. Retailers should make the necessary changes or risk facing enforcement action. The watchdog also called on the Government to bring in reforms to tighten the law. Under current rules, most products should be priced per unit either by kilogram or by litre. But the CMA found examples of retailers using grams and millilitres. In some instances, the same type of product, such as liquid laundry detergent, was priced per unit using different metrics, making it hard for shoppers to compare prices on a like-for-like basis. Pray for these changes to help those who cannot travel to large stores or shop online, so they must rely on higher-priced convenience stores.