Here's why it's good to check our Bull page from time to time. Wal-Mart will expand its price-matching guarantee for the holidays with the promise to meet the lowest price shoppers find throughout the season, even on items they’ve already bought. The policy will apply to items purchased in stores and online between November 1st and December 25th; customers showing an original receipt and a competitor’s print ad with a lower price will receive a gift card for the difference.