This is a summary. To read the whole story subscribe to BostonGlobe.com
NEW YORK — The ‘‘Every Day Low Price’’ king is trying to shake up the world of pricing once again.
Walmart said it has rolled out an online tool that allows shoppers to compare its prices on 80,000 food and household products to those of its competitors. The world’s largest retailer began offering the feature that is called ‘‘Savings Catcher’’ on its website late last month in seven big markets that include Dallas, San Diego, and Atlanta.
The move by Walmart, which has a long history of undercutting competitors, could change the way people shop and how other retailers price their merchandise. Americans already increasingly are searching for the lowest prices on their tablets and smartphones while in checkout aisles.