The elementary method is based on simple comparison of commodity turnover before carrying out publicity. It does not consider not advertizing factors of growth of commodity turnover and therefore, it can be used only for a preliminary estimate of efficiency of publicity.
The method of determination of economic efficiency at simultaneous advertizing of several goods with different trade margins is also interesting. The technique of determination of economic efficiency of long publicity is in detail considered (for example, advertizing campaigns).
Economic efficiency of advertizing can be defined also on the basis of such private economic indicators as the commodity turnover size relation to publicity expenses, costs of certain types of advertizing to the size of commodity turnover or to number of the purchases stimulated by these types of advertizing.
Moreover, the more deeply the understands the processes happening in groups the less remains for him distinctions between different target groups and becomes obvious that these groups (and all ostalna develop similarly.