Something always bothered me about the prices of rune pages over the years...
And today I figured out what it was. Needless to say, I was quite slow. The IP price of a rune page is 6300 while the RP price is 590 RP. But according to unofficial Riot conversion rate, 6300 is the equivalent of 975. And this isn't the first time this has been brought up (References: http://boards.na.leagueoflegends.com/en/c/gameplay-balance/PhlUWGAl-590-rp-is-not-6300-ip-rune-page-cost-inequality and https://www.reddit.com/r/leagueoflegends/comments/25sjt5/why_is_that_new_rune_pages_cost_590_rp_but_6300/). It almost seems like Riot wants people to spend RP instead of IP, hmmmm, nahhhh. Riot would never do that. I mean come on, this is Riot we are talking about, they are the epitome of kindness.