Home › Forums › Angry Birds Epic Forum › Mastery points for set items? › Reply To: Mastery points for set items?
@killerkea
@burbman The way you posted makes it sound like upgrading an item would be absurdly expensive. I thought you meant to upgrade a level would be the same cost of the level. Therefore upgrading a level 9 to level 15 would cost 10 + 11 + 12 + 13 + 14 + 15 = 75 and no one would pay that much.