What can be sold at non-manual self-service drug vending devices are

What can be sold at a non-manual self-service drug vending device is, Class B over-the-counter drugs. Selling is the process of introducing the benefits provided by goods to meet the specific needs of customers. Commodities of course include tangible goods and services. Satisfying a customer's specific need means that a customer's specific desire is satisfied or a customer's specific problem is solved. The only way to satisfy such specific needs of customers is through the special benefits provided by goods.