Abstract: In a method and a system for selling authorizations for events or the like, particularly for various types of tickets, sellable authorizations are defined in databases, and an advance booking agency or a purchaser accesses via the Internet the database for reserving and/or purchase of the authorizations. The venues are equipped with admission readers for identifying tickets provided in the form of data carriers, and the admission readers of each venue communicate with an area server, which includes a database of the sold authorizations for this venue. The servers are connected via a network, for example the Internet. The advance booking agencies or private users connect to a Web server by entering suitable addresses. The Web server retrieves the sellable price quotation from the database of the area server over a secure connection, and displays the sellable price quotation on the display of the advance booking office.