"How much can I ask for it?" - that is the question. Reasonable buyer would not offer the highest possible bid in auction. Reasonable seller of professional services will not offer the lowest possible bid either. Serge discusses client - provider engagement and pricing policy from the point of view of game theory. The presentation is intended both for clients, who are interested in getting the lowest price possible retaining the best service providers, and for vendors, who are motivated to get fair price for their services and withhold the price pressure.