Big Retailers Agree to List Unit Prices on Websites

Is that television-size box of graham crackers at Costco really a better deal than a standard box at Wal-Mart? Soon, online consumers won't have to do the math to figure it out. Some of the country's largest supermarkets and drugstores have agreed to display prices by unit of measurement, as well as by item, on their websites and mobile apps, to help shoppers slice though the confusion that sometimes arises from different packaging and discounts. Major retailers including Wal-Mart, CVS and Costco have agreed to the deal.