Costa fans are rushing to snap up the drink which was reduced from its usual £4.99 price tag.
An eagle-eyed shopper has spotted the deal on the shelves of B&M and posted the lucky find on Facebook.
The user wrote: “B&M today find. I am so pleased.”
The refreshing beverage would normally set you back £4.99 but the bargain deal sees it scanning at only 50p.
But some Costa fans have been sceptical about the offer when they noticed it was past the expiration date.
However, others have flocked to the comments to defend the product.
One person said: “The date is BB not use by! I’d risk them for 50p. Bargain.”
Another one added: “I’m sure it’ll taste absolutely fine and things like this last way after the use by date that’s just a guideline.”
A third person wrote: “U can use a month past expiry.”
It comes as Costa Coffee has released a new summer menu which includes two new exciting bubble drinks and Italian-inspired lunch options.
The coffee chain has has pulled out all the stops for the new summer 2024 range with a tasty selection of drinks, savoury dishes and sweet treats.
A survey by Open Reach found that 56 per cent of Brits opt to have a coffee when purchasing a hot drink on the go.
But as prices of the beloved beverage have soared by 30 per cent in just three years, the Sun has tested high street lattes to find the best value and taste.
B&M Bargains has become a beloved staple on the British high street.
Not just for its seemingly endless aisles that stock everything from food and clothes to homeware and tools, but also its prices.
While we’re living through a cost of living crisis, B&M is a sanctuary for budget-conscious shoppers.
And we all know that familiar feeling of walking into a B&M store feeling like we’re about to embark on a treasure hunt.
The shelves are packed with an eclectic mix of goods, ranging from branded food items and cleaning supplies to quirky home décor and seasonal products.
The thrill of discovering new things and bagging a bargain keeps Brits returning, with hauls and ‘come shopping with me’ videos about the store racking up millions of views on social media.
But what if we told you that you can get things EVEN cheaper in your local B&M?
The bargain hunters behind Hot UK Deals have revealed that the date and time you should attend B&M to score the best deals.
How to save on your supermarket shop
THERE are plenty of ways to save on your grocery shop.
You can look out for yellow or red stickers on products, which show when they’ve been reduced.
If the food is fresh, you’ll have to eat it quickly or freeze it for another time.
Making a list should also save you money, as you’ll be less likely to make any rash purchases when you get to the supermarket.
Going own brand can be one easy way to save hundreds of pounds a year on your food bills too.
This means ditching “finest” or “luxury” products and instead going for “own” or value” type of lines.
Plenty of supermarkets run wonky veg and fruit schemes where you can get cheap prices if they’re misshapen or imperfect.
For example, Lidl runs its Waste Not scheme, offering boxes of 5kg of fruit and vegetables for just £1.50.
If you’re on a low income and a parent, you may be able to get up to £442 a year in Healthy Start vouchers to use at the supermarket too.
Plus, many councils offer supermarket vouchers as part of the Household Support Fund.