Walmart, Kroger raises prices for COVID-19 rapid test kits By: MarketWatch January 04, 2022 at 13:56 PM EST Prices are going up for some of the cheapest and most popular at-home COVID-19 test kits in the U.S. Read More >> Related Stocks: Abbott Laboratories Amazon.com CVS Health Corp Kroger Co Wal-Mart Stores, Inc. Walgreens Boots Alliance