Tesco customers are taking advantage of a price glitch at the tills that sees discounts on £3 meal deals applies twice.
It means people have been picking up food for remarkable prices, both online and in store, with some getting a sandwich, shack and drink for just 4p.
One person posted a video of getting £19 worth of food for just 47p after putting through a series of meal deals at once.
One shopper tweeted: "Two meal deals for £1.89? I think I broke @Tesco."
Another added: "Get yersel doon tae Tesco just got a meal deal for £1.20"
A third wrote: "Got a meal deal out of Tesco £1.40...Mondays a good day."
Normally, when the tills at Tesco recognise three qualifying meal deal items, it adjusts the price down to £3.
The problem appears to be that the automatic discount is being applies twice.
That means the bigger the savings you were originally due, the bigger the error.
One person shared a picture of his receipt where a £2.96 original discount was applied twice - seeing his total bill coming to just 4p.
Reports have since come in saying some shops have closed their sandwich aisles to stop people from taking advantage.
People were still reporting double discounted deal at 12:30pm on Monday.
A Tesco spokesman told Mirror Money: “ We’ve now resolved a technical issue which affected some of our meal deals. We hope that those customers who received a little extra discount enjoyed their lunch.”