Abstract: The present invention relates to use of vending machines for dispensing or effecting automated sales of products. In particular, the invention is directed towards vending machines, methods of dispensing products from such vending machines, and methods for effecting payment for products or articles dispensed by a vending machine. In an embodiment, the vending machine comprises (i) a vending machine cabinet, (ii) at least one horizontally oriented partition chassis, wherein the partition chassis comprises a base plate, a plurality of partition trays independently mounted on said base plate and a plurality of load sensors, (iii) at least one door having a selectively actuatable lock, and (iv) a controller.