A basket of 15 products cost £36.63 on Iceland's website - but £50.50 on Just Eat, excluding delivery fees; while some individual products were twice as expensive.
Ordering groceries using apps such as Deliveroo, Uber Eats and Just East can cost twice as much as buying them online from the supermarket, according to Which?
All the app orders excluded delivery fees and were sent to the same postcode from the same local store.Fairtrade bananas cost 85p at Sainsbury's but £1.
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