The third essential moment making a perspective of creation of model of development of the market is definition of extent of aggregation of commodity groups. It is necessary to present accurately, at what level it is necessary to build the forecast of capacity of the commodity market, - in general on commodity group, by types, types, models.
Determination of market capacity is the main task of market research. Capacity of the commodity market is understood as the possible volume of sale of goods (concrete products of the enterprise) at this level and a ratio of various prices. Market capacity is characterized by the extent of demand of the population and size of the commodity offer.
Distinguish information the general (external), commercial (internal), and special. Internal information - the data provided by business. Sources of internal marketing information are: