Apart from the total logistics costs (TLC) nowadays to evaluate the integrated supply chains (SC) effective functioning some new criteria are used more often. These criteria characterise the quality and reliability of accomplishing logistics operations and functions. It is obvious that these metrics are connected and their separate representation is a consequence of not enough developed supply chains theoretic model. The paper presents the critical analysis of existing approaches to the TLC evaluation and SC reliability, the methodical approach which allows to evaluate the total costs indexes and supply chains reliability. Taking into consideration that most indicators which describe the chain functioning are the random values, to obtain the required evaluations there is a developed algorithm based on simulation.