Supermarket manipulation tactics

I recently did a large Tesco online order. I was trying to work out the best buys and noticed the following:

– The cost per 100g is sometimes completely incorrect

– The cost per 100g is sometimes rounded down rather than up which suggests it is cheaper than it actually is

– The cost per unit varies even for the same product – sometimes it is per item or per 100g  (tomatoes are an example of this)

– When there is an offer such as buy 2 for £5, the price per 100g doesn’t reflect this, it only has the initial price per 100g.

– The filters on the Tesco website do not allow you to order by price

– The filters do not allow you to filter by brand, something Ocado does allow

– The offers displayed on the website are not always available for your delivery slot (surely they could filter it once you have booked your delivery slot!)


At a time when many people are watching the pennies, supermarkets are really not helping us find the best deals. Should you really need to have a maths degree to balance the budget?


Published by porternutrition

I am a freelance Registered Nutritionist with NHS, charity and private sector experience. My passion is for improving health without breaking the bank and spending hours chained to the kitchen. I work with all ages but have specific focus on the youngest of the community as they start their food journey.

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