A system includes a transaction-processing kiosk located in a predefined retail space. The kiosk is configured to enable a first human user to execute a current purchase transaction involving at least one of a set of retail items selected from the predefined retail space. The current purchase transaction is executed without participation by a second human, such as a cashier. The system further includes at least one display device having a screen and in signal communication with the kiosk. The at least one display device is configured such that the screen simultaneously displays a predetermined number of descriptions of retail items the subject of purchase transactions with the kiosk that were executed prior to execution of the current purchase transaction by a plurality of different human users. The at least one display device is positioned such that the screen is viewable by all parties present in the retail space.