Abstract: Data aggregation systems and methods capable of processing data related to a plurality of subscribers. In an exemplary embodiment, thee data aggregation system includes a receipt system, a sever assembly, a user interface, and a data analysis system. The receipt system can enable the data aggregation system to receive data, such as sales data, from the subscribers. Such data can be aggregated and stored on the server assembly. The user interface can be an element of a website serviced by the server assembly. Through the user interface, a subscriber can pose a request. In response to the request, the data analysis system can process a portion of the aggregated data and can, thereby produce a result set. The result set can be presented to the subscriber via the user interface.