The article presents results of studies of the authors conducted in a group of selected companies. Focus was put on conditions of high customization of products and low repeatability of production. At the beginning of the article, a hypothesis was made that there is a demand for a support and optimization system of supply in agile companies. In the next part, it is attempted to justify the hypothesis made, by using the results of studies supported by analysis of the network thinking methodology. Conclusions and suggestions coming from the studies were directed on the matter of process of making purchases and searching possibilities to lower the costs in this area.