A sales system for coupling to a communications network. The sales system includes a sales interface at a first network address that includes a set of categorized interface elements. In addition the sales system includes another sales interface at a different network address that includes a second set of categorized interface elements. Finally the system includes a sales server at a third network address that may be used to operate both sales interfaces to provide an impression that the first and second sales interfaces are being operated by different entities. The sales server includes a categorization interface that responds to user input to define both sets of categorized interface elements. The categorized interface elements respectively include a plurality of specification elements.