Shoppers could save £440 a year swapping wheatgrass for broccoli

'Superfood' alternatives such as sardines and kiwi fruit are cheaper and have same amount of vitamins, says Which? Shoppers could save hundreds of pounds a year by swapping expensive and fashionable "superfoods" such as blueberries and wheatgrass for cheaper alternatives, according to research published on Monday. Which? said consumers could save up to £440 a year by ditching popular superfoods in favour of better value alternatives that offer similar health benefits.