A data server receives multiple requests for data cubes that include data related to a user-specified subject matter. The requests are aggregated into an aggregated request, and an initial data cube is retrieved based on the aggregated request. Upon determining that the initial data cube fails to provide requisite data needed by the aggregated request due to data being missing from the initial data cube, the missing data is located and identified as augmentation data. The initial data cube and the augmentation data are sent to senders of the multiple requests for data cubes. In response to a new request, from a new requester, for a data cube that provides data related to the user-specified subject matter, the data server presents the new requester with an option to purchase the initial data cube at a first price and the augmentation data at a second price.