More like he used a price-matching program to swindle people.
Suppose you want a 512GB microsd card. You've heard through their ads Best Buy will match Amazon's prices, so you depart your house with cash in hand, happy you won't have to wait for shipping. You walk into Best Buy, pick a Sandisk drive off the shelf, and show the cashier that despite Best Buy listing it at $150, Amazon only charges $100, so please match their price.
Sorry says the cashier, this Sandisk 512GB U-3 V30 A2 Class 10 microsd card is model SDSQXBZ-512G-ANCMA, while the Sandisk 512GB U-3 V30 A2 Class 10 card on Amazon is model number SDSQXA1-512G-GN6MA so we can't price match.
Price matching means absolutely nothing when every single one of Best Buy's overpriced products has its own special model number that prevents them from ever having to price match anything.