Aion Riftshade

i just wanted to ask why prices and content of reward got changed

on previous event Enchantment Chest costed 60 event items and could contain either 3xL75 or 2xL80 or 2xL85

this time from similar chest that cost 90 event items you can get 3xL70 or 2xL75 or 2x80

just wanted to buy box today but i noticed i don't have enough items

and you can get max 180 items from pass, so now 2 chests (not including premium witch cost like another 15euro)

ps. why is there "Use the Rift 1x" quest in pass