 A feature of the magazine is 'The Grocer 33'.This is a survey of each of the 5 leading supermarkets' (Asda, Morrisons, Sainsbury's, Tesco and Waitrose) prices and availability on a range of 33 popular lines and published in each issue.The survey is conducted by "mystery shoppers" and different branches in varying parts of the country are used for each week's survey.