Abstract: A self-serve product dispenser system includes a user-interactable tiered menu that is dynamically modifiable in realtime to display available products at current price. The menu may be displayed proximate to the product dispenser, or displayed remotely, e.g., on a user's smart device. Preferably the menu is displayed on a touch screen to facilitate user touch-interaction with images of available products, which interaction advances to a new menu tier with more detailed product information. The user can touch-select payment mode and can make secure payment in a variety of ways, including remotely. Upon confirmed payment, products are dispensed directly from the product dispenser, and associated inventory is debited by the quantity of dispensed products. However, the product dispenser may act as a virtual locker should the user elect to select and pay for products but defer secure pick-up from the dispenser.