The search of a theoretical model of the behaviour to the consumption, most possible near the evidence of the truth, is at the base of the Demand’s theory. Various scientific approaches to the pattern of the preferences of the consumers and the choices of consumption have been implemented.The extravirgin olive oil market characterizes for a marked dichotomy between little great companies and most numerous smalls businessmen. The first ones have an extension on all territory, while the little ones are legacies to local niches. Moreover, from the data emerged, acquire significance, to the aims of the competitive context, the promotion strategies, particularly used in the supermarket channel. Also in this case, a strong discrepancy is showed between the use promotion lever of the great companies, plus continuous, regarding the small enterprises. It’s strategic, like in other sectors, the increasing role that are assuming the Marches trades, or like market shares (in constant increase on all territory), or like privileged management of the advertising lever. At last, extravirgin olive oil sector is clearly still characterized from a remarkable elasticity of the pricing effect on the volumes of expenditure.