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We've already ditched our regular shopping trips in favor of home delivery.

According to Citizen's Advice, your rights when shopping for an item online that has been discounted in a pricing error can depend on a store's terms and conditions.

"Sundays are when most people off so being able to have longer hours, more time to go shopping is wonderful," said Ms Lawson.

While I appreciate the hunt for the deal as much as anyone, my more recent Costco experience was still overwhelming and made me feel like an ant shopping at a warehouse.

"Online shopping has completely transformed retail - as technology becomes more pervasive, the risk of this kind of attack rises with it," he told the BBC.