A computer-based digital marketplace exchange is disclosed, providing the functionality of offering rounds of golf for sale, as well as conducting the sale of the rounds of golf. Customers can use the system to build, purchase, and redeem rounds, subject to at least one rule uploaded by the course. Once an order is purchased with the system, a customer's account is credited. When the customer seeks to redeem the round, the system can be configured to access a real-time positioning component and temporal component of a customer's mobile computer device. The system determines whether the time/location of the customer violates the rules placed on the round. If the rules are violated, then the system notifies the customer that he/she is prohibited from redeeming the round. Conversely, if the rules are not violated, then the round is redeemed and the course notified of the customer's arrival.