An e-commerce mechanism tries to dynamically estimate or refine a profile of a buyer and hence change their negotiation strategy in a dynamic and an on-line manner. In order to achieve this object, a cleaning target such as a unit or component including an electrical component is cleaned while dry ice and a detergent simultaneously act on a surface to be cleaned of the cleaning target. The passageway is positioned passing through a first wall of first gastrointestinal organ and a second wall of a second gastrointestinal organ with the inlet end disposed within an interior of the first gastrointestinal organ and with the outlet disposed within an interior of the second gastrointestinal organ. The processor then determines a tampering concern associated with at least one of the responses in the response message and increases an inquiry level based at least upon the determined tampering concern.