Well, there is also a fine here -> Bulgarian Union is punishing with only 300 leva/ 150 euro for pyro shows:) And some bans for the fans of course, but usually in the derby matchs it looks like this:

This is the biggest club in Bulgaria, Levski :) But the small teams fans also are using pyro :) I should say that the atmosphere is very different when the fans are fanatics ;) Singing like one!