Shoppers joked after they discovered you can buy a full jar of Waitrose jam for £1.30 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.
The items were on sale at the Waitrose store in Worcester this week. On Twitter, people tweeted about the differences. 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 sarcastic user said buying the cheaper jars was about "taking back control"
Another user added: "27p in Aldi lad."
