The majority of organizations not only aspire to sell their product(s), but they also aspire to solve the problems clients are faced with in that process. In other words, goods have to be amended and encompassed by a set of additional post-sales services. The research conducted in this paper was done with the aim of rating and ranking the post-sales services rendered by domestic organizations as the characteristic that influences their successful operation on the market. The primary goal is to further deepen the knowledge and evaluate the basic features of the post-sales service markets, given the fact that the knowledge of that market that has been acquired so far is quite limited. The starting premise implies that to achieve maximum organizational effects, it is necessary for the organization to successfully create post-sales services which appear to be the key to competitive maneuvering in the conditions in which products are being more and more similar to each other and when there is the need to find the other elements which will make buyers differ them from one another. In this research study, the following methods are used: the comparative statistics methods (ch2 Test, ANOVA), the hypothetical-deductive methods, the analytic-deductive and comparative methods, the historical and statistical-descriptive methods.