Mike Mann often buys things from Roy's shops, which changes theme every episode. But he wants something very specific which often annoys Roy. When Roy can't find the object he will ask his limb-less wife, Margaret, who lives upstairs, if they have any in stock. If Roy finds the object Mr Mann wants then Mr Mann will add some other small detail which must be required for him to buy it. When he actually gets the item he is looking for he becomes disappointed, showing that it was more to do with annoying Roy than buying anything.