A computer-implemented method and system for buying and selling cellular service in a market allowing real-time pricing is disclosed. The computer-implemented method and system comprise storing at least one offer to sell a specified quantity of cellular service (which may be voice minutes, messages, data or other available service parameters) initiated by a seller, and processing one or more requests to purchase cellular service initiated by one or more buyers. The processing of the requests to purchase cellular service further comprises implementing a method for matching one or more requests to purchase cellular service with any stored offers; wherein when a match occurs the buyer is able to purchase the desired quantity of cellular service. The computer-implemented method and system includes deducting the purchased quantity of cellular service from a service profile of the seller and adding the purchased quantity of cellular service to a service profile of the buyer.