Abstract: Point-of-sale apparatus to be used with an optical scanner for identifying the articles sold, comprises housing to be placed over the optical scanner, a light-transparent window carried by the housing so as to be aligned with the optical scanner when the housing is placed thereover, a weighing scale carried by the housing to weigh the article identified by the optical scanner, and a display for displaying the weight and/or the price of each article identified by the optical scanner and weighed by the weighing scale.