Upon selection of a product selection icon on a user interface of a beverage vendor, a price per amount of the product is displayed to clearly depict product costs while also providing flexibility for having products of different price points. After selection of the product and upon successful payment validation, a dispensing gauge displays an amount of product dispensed and total current cost of a dispensing session at a location of the product selection icon. A selectable dispense icon is provided upon the successful payment to facilitate dispensing the selected product and a product icon is provided proximate to the selectable dispense icon. Within the dispensing session, upon selection of a second product selection icon, the dispensing gauge moves to the second product selection icon and accumulates additional cost for the transaction based on a cost per amount of a second product associated with the second product selection icon.