The main reason is that I can play Dragons Fire on the play, on curve, before my third turn to kill my opponents two drop
Why such a large margin you ask
Checking regularly helps you spot trends - if a card in your collection has been steadily rising, that trend likely has a cause worth investigating
(This isnt the article for someone wondering how to best protect The Power Nine this is geared towards normal board and card games.) So, its about how much you care about the sense of quality and how much money you want to spend
Before you even think about buying, you should verify that number directly on the grading company's website
Will of the council and council's dilemma both use non-secret voting, with will of the council showing up on cards that care which option got more votes and council's dilemma being used for cards where the number of votes for each option is what matters