Can't remember if I mentioned before but when I went to buy a large lot of persil washing powder from Asda, i checked the prices and the biggest lot had less than 2 lots of the next size down, but cost a little more than the two smaller size lots! I think they are taking advantage of peoples belief that the largest size is the most economical but if they keep doing this, they won't end up selling any more of the biggest amount items.
