Modern software allows industrial enterprises to rationalize the use of employees' working hours, to reduce labor intensity and material consumption of manufactured products, but the factor of consumer demand uncertainty forces us to focus on a probabilistic model when forming a portfolio of orders. The paper considers the method of operational forecasting of production costs and the probability of execution of the application by an enterprise operating in the market of perfect competition in the conditions of clients filing applications with an incomplete amount of information. The author's approach to the operational assessment of production costs is based on the ABC method and the rules of cutting design "Muller and son". It allows the calculation step of the request to edit a group of multidimensional products according to customer's requirements, the result is the ratio of the balance between expected customer price and pledged the company profitability. It allows at the stage of calculating the application to edit a group of multidimensional products according to customer requirements, as a result, a balance is reached between the price expected by the client and the profitability laid by the enterprise. According to this method, for calculating a non-standard request, a multidimensional product is represented as a group of rectangular parallelepiped shapes. Costs for each material layer used in the product are considered separately in the calculation process. The study of the nature of the relationship between the consumption rates of sheet material, the dimensions of a multidimensional product and the useful width of the roll made it possible to establish their proportions leading to peak values of the consumption of material. To exclude additional material costs, a method has been developed and tested to find the optimal material consumption taking into account the probability of order fulfillment. Application of these recommendations will allow industrial enterprises to increase the value of products and the enterprise for each participant of relations; will be the basis for the growth of competitiveness of domestic products.