Because it's look cool okay? Kirin is one of the four legendary beast in asia culture, others are Dragon, Phoenix and Turtle. Well in some country they do change Kirin to White Tiger or something, i don't really know.
Have you guys see Kirin in action? It's a huge ass beast that gently press his feet to the enemy, here you can watch it : https://www.youtube.com/watch?v=driN8kfnBAo
Sum : He is expensive because he has legendary beast theme and he look cool. End of the story.

P/s : Flood Dragon is not actually a dragon.
This post was last edited by Kouka at 2016-10-21 17:07