Well, it's not a given that the price corresponds to the quality. Take, for example, the Archdevil and the Black Dragon. Why does the Black Dragon cost 4500 + 2 sulfur, while the Archdevil costs 4666 + 2 sulfur? Or, for instance, tell me why a Goblin costs 10 gold, and a Skeleton costs 17. What makes the Skeleton more useful than the Goblin? You can throw a Goblin, sacrifice it, or simply send it into battle and bless it. What can you do with a Skeleton? Nothing. And where is the fairness in the pricing?