Systems and method are provided for managing inventory by determining grading returned products. One method includes, generating a hierarchical model based on the return product identifier, the hierarchical model comprising a plurality of data structures; and generating an agent configured to traverse the plurality of data structures of the hierarchical model. The method may further include determining a price of the product based on a product condition; modifying the database to assign the price to the return product identifier; transmitting a notification, to the user device, to resell the product at the determined price; and providing, for presentation via the user device, a user interface that includes the notification.