Wandering around a local Co-operative supermarket this afternoon I spotted bags of frozen broad beans in the freezer section. Now I am rather partial to broad beans and regularly buy frozen ones, and I am enough of a nerd to know that at the big supermarkets the 500g or 750 g bags normally work out at £2 per kg.
The shelf edge label in the Co-op declared these broad beans were £1.65 per kg based on it being a 907g bag for £1.50, but hang on, this bag is clearly labelled 750g and £1.50! So the bags are smaller than stated on the shelf edge and consequently £2 per kg not £1.65.
The Co-operative movement was founded back in the nineteenth century on the principles of honest fair trading, they have slipped up badly on those here!