PROBLEM TO BE SOLVED : To provide a real estate product selling system interlocked with a travel selling system capable of creating an environment in which not only an individual person can leisurely travel, but also an enterprise can reasonably give a long term vacation to employees, and thereby capable of contributing to the development of both the individual and the enterprise.SOLUTION : When an RDBMS management center in which the number of enterprises participate is structured and the real estate product and the travel product are purchased by an introduction of each member enterprise, a public bond social control support fund system for paying a public fund social control support fund according to the real estate product expense and the travel expense is introduced to the member enterprise. A transmittance system and a control center are constituted for a surplus money pool money natural person produced from the real estate product interlocked with a transmittance circulation program travel product selling system (the turnover rate and the like of the real estate product and the travel product) by the surplus money to the member enterprise which comes out from various kinds of variation conditions of collaborated products of the real estate product and the travel product and a correction rule (a turnover rate and the like of the real estate product and the travel product).SELECTED DRAWING : Figure 1COPYRIGHT : (C)2017, JPO&INPIT