EN
Proceeding from an assumption that the price system combined with the system of measures, finance and incentives determine the behaviour of enterprises in relation to the scientific-technical progress, and especially production and introduction of new, improved products with lower production costs and a higher utility in their consumption, the author criticizes the cost formula for fixing the prices of these products. The analys is has been based on concrete examples taken from the practice. Its further partis devoted to presentation of assumptions and principles of the effectiveness method with participation of the producer of such new and improved products in benefits f lowing from increase in their social utility value. There is quoted a definite example of fixing prices by means of this method in two variants, i.e . when a new product is better and simultaneously cheaper from the base product , and when it is better but also more expensive in comparison with its equivalent, with increase initsutility value being higher than increase in its price. After presentation of advantages of th is method, the author discusses conditions of its effective application including e.g. the present level of prices for base products, appropriate choice of their equivalents , determination of the utility value of improved products, al lowances made for the level of warld prices, and others.