In this day and age, when people have been subjected to the COL crisis, you might think that most people would look at the cost of products by gram, and choose accordingly. How then, can Asda get this SO wrong? 3 different kinds of tuna, but all weigh the same, and yet some genius has them all marked up at different prices per gram. Does no one check this stuff? This is not the first time I've noticed the maths is a load of rubbish. It's not a one off!