Revealed: November's cheapest supermarketWe compare a basket of branded supermarket goods

13 December 2013

Woman walking past vegetables in supermarket

Asda was the cheapest supermarket for our basket of branded products in November, according to our monthly tracker.

Each month we compare around 100 branded products to see which supermarket is cheapest for a basket. It includes everything from washing powder to sardines and averages prices over a month for the online supermarkets Asda, Tesco, Ocado, Sainsbury's and Waitrose.

Asda was the cheapest this month charging £195.26 and for the first time in five months Waitrose was the most expensive for the basket costing an average £213.21.

Which? members can log in to see how the other supermarkets compared on our supermarket prices compared page. If you're not already a Which? member, you can discover the benefits of taking a £1 one-month trial to Which? now.

Comparing branded products at supermarkets

Asda was on average cheapest for our basket for the past five months. Ocado had previously been more expensive on average than Waitrose but was slightly cheaper in our November comparison. The products in the basket vary slightly depending on availability at the different supermarkets. 

You can find out how customers rate Asda for customer service and quality in our supermarkets review - we surveyed over 11,000 Which? members to find out their views of the different supermarkets.

In order to work out the average price of our basket we used data from the independent shopping website mysupermarket.

Supermarket price comparison schemes

Most supermarkets have price comparison schemes - often giving you a voucher for the difference if your shopping (or parts of it) would have been cheaper elsewhere.

Tesco, Asda, Sainsburys all do this but who they check against and the terms differ. For instance, Asda gives you a voucher if your shopping isn't 10% cheaper, Sainsbury's only compares branded products and Ocado only checks against Tesco.

Waitrose price matches Tesco on branded items and this is included in the total. Our comparisons include special offer discounts but not multibuys.

More on this...