The process of “making change” also quite properly involves addition and subtraction. You can add vitamins to improve one thing, or subtract caffeine to make another.
Or you may perhaps eliminate some factor to simplify a complexity, remove some old-fashioned feature, reduce the cost, or just make it more exciting and modern looking. Removal of a factor is well exemplified in the field of dehydrated foods—a method of removing the liquid content of foods to permit space-saving during transportation—the liquid to be replaced by adding water when ready to use.
Adding, subtracting, combining. Once, lead pencils had no erasers. A new convenience was provided when someone added the now familiar rubber tip.
A Hungarian sculptor, Dezso Lanyi of Budapest, became famous by combining caricature, usually done in only two dimensions, with three-dimensional sculpture. In color, too. A biographical sketch of Orson Welles describes a useful addition he made to movie technique when movie work first engaged his attention. Observing how the men in charge took turns looking at the action through a range-finder on the camera, he merely added a second range-finder to the camera, enabling two persons to look at one time, and cut the time for this in half.
Adding, subtracting, combining. A practical idea in selling is to watch for possibilities of combination selling. Home furnishing businesses always try to add small pieces when a large order has been concluded. The family who buys a living room davenport and two easy chairs will be prevailed upon to get the lamps, end tables and other “finishing touches.” The woman who buys a suit will be beguiled with the correct hat, purse, shoes and gloves to go with it.
Socks and ties, mufflers and gloves; pens and pencils; bath towels and bath mats; perfume and soap; cold cream and powder; rouge and lipstick; pipes and tobacco; playing cards and bridge covers are popular combinations. Desk sets, sets of books, sets of dishes are other examples. An object can be combined with some other object or idea to multiply its usefulness or novelty. You have a usable idea like a double picture frame for two photographs side by side, or a picture backed by a mirror on a swinging frame. Again, small chairs were formerly sold only individually now they are often sold in fours with a bridge table.
Sometimes a single unit can be subdivided. For example instead of buying a set of dishes as a whole, one can buy needed pieces from open stock. (Think, “IKEA”, Pottery Barn, etc.)
Not only is it well to sell combinations of goods when possible, in a “wholesale” fashion, but it is of course also well to strive always for orders as large as possible. Thus if you have a product that can be applied to whole industries or great organizations at a time, do not neglect them. For instance, hotels as markets for products logical to their needs should not be overlooked. Millions of sheets, towels, sets of cutlery may be mentioned.