Why are rune pages so expensive?

I am wondering why is runepages 6300 IP? Basically this is a Block for playing ranked seeing that you need 2 different runepages for my main champion. then i need a 3rd for my offrole. but its 6300 IP, you guys have reduced the cost of Runes them self, especially the main runes, Magic pen, Attack damage, attack speed, etc. why not just decrease the price of a runepage by 50% so 3150 IP. Seems more fair by today's standards as you guys are spitting out New champs left and right for 6300 IP.
Report as:
Offensive Spam Harassment Incorrect Board