Have you ever thought about the advantages of Czech coins? And are there any? Is it true that we can pay any sum by a relatively small number of coins? Can we determine an optimal payment by so called greedy algorithm? And what if we add a Czech coin of a new value which could reduce the average number of coins needed for payment? We will answer these questions and we will compare the efficiency of payments in Czech crowns, American cents, British pence, Euro cents and selected exotic systems. We shall see whether the Czech system com pares favourably with the others.