There have been reports of doorstep fish sellers calling on vulnerable people and pressuring them into buying large quantities of fish. In one incident an elderly lady paid over £326 for a box of fish. Several complainants said they have had to throw the fish away as it tasted odd. Trading Standards advice is never buy this type of product from door-to-door sellers who are not regular rounds men. You may not get the weight, quality or hygiene standards you are expecting.