any, if not most of us, have experienced the knock on the front door of our home by a postman/woman who is delivering an item that has been insufficiently prepaid. We may recall the phrase ‘double the deficiency’, which was the amount to be handed over, and then a change that came when a standard handling flat fee of £1 was additionally paid, as well as the shortfall. If the postage was one penny short, then that and a pound was required, and a friend did inform me once that
