The article is devoted to the analysis of the mechanism for the tourism product selling and formation of its assortment on the example of the TUI Travel Agency activity. The purpose of the work is to study the features of the mechanism of the tourism product selling and formation of its range, with the identification of the main components of the tourism product, its structure, the main and additional complex of services, etc. The generalization of the features of selling mechanism and formation of tourism products assortment will increase the production activity of travel agencies and facilitate the implementation (sale) of tourism products by managers, agents for tourism in travel agencies. On the example of the TUI Travel Agency, as TUI...