Shoppers joked after they discovered you can buy a full jam of Waitrose jam for less than the supermarket is selling an empty jar.
A jar of the store's own brand raspberry jam will set you back £1.20 - but an empty jar of the exact same size in the same shop costs £2.50.
Even a jar of upmarket Bonne Maman strawberry preserve only costs £2.65 - and for that extra 15p you'll get the jelly and the jar.
The items were on sale at the Waitrose store in Worcester this week.
On Twitter, people tweeted about the differences after someone posted a photo of an empty jar of jam available for 29p more than a full jar of Bonne Maman, from 2017.
And it seems not much has changed.
One said: "Clean air is incredibly expensive these days."
Another user said: "I re-use an empty Bonne Maman jar every day for overnight oats.
"Beats me why people buy new jars."
One user said buying the cheaper jars was about "taking back control"
At @waitrose you can buy an empty jam jar for £2 or an identical one full of jam for £1.71. Your move ... pic.twitter.com/z3qOzSkKWU
— DavidJWood (@RedWoodyLFC) March 13, 2023
Offering a different perspective, one tweeter said: "Cost of glass is huge - just increased 25%.
"Also, whilst the consumers save money, the brand still has to pay the £0.60 to Waitrose as part of the margin maintained promo."
Another user added: "27p in Aldi lad."
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