Which? found Waitrose to be the cheapest for several of the products included in the analysis, including Dolmio Bolognese Sauce Onion And Garlic 450g, which was £1.50 on average in Waitrose compared with £2.60 at most other supermarkets, including Morrisons, Sainsbury’s and Tesco for those without a loyalty card – a difference of 73%.
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