Can we lower the cost of leveling up a mastery in a champion? @Riot

With the new Blue essence system, I have calculated the amount of blue essence it would take to upgrade all of my tokens to level 6 and 7. Just for the tokens for my adc's it will cost 81,900 BE just to get a mastery emote. It's not even slightly difficult to get level 6 and 7!!!! When I hear someone masters a champion it doesn't mean go to a normals game and get S rank back to back in 1 day. I'm just so disappointed at the price it costs for an extremely simple mastery. Getting mastery 5 is much harder than 6 and 7. [sg-janna]