The important framing: this is not Japan discounting anything
return those cards to the hand
A few of these cards would be "Dark Hole," "Raigeki," "Harpie's Feather Duster," "Pot of Greed," "Solemn Judgement," "Mirror Force," and more
The design team (Aaron Forsythe, Richard Garfield, Mike Elliott, and Tyler Bielman, led by myself) approached Dimir as the "library guild," much as we approached the Golgari as the "graveyard guild." As I explained above, this comes about because blue and black have more interaction with the library than any other two-color combination
Although CGC also offers annual memberships at various tier rates, bulk pricing is also available to free accounts if youre sending more than 25 cards at once, it costs $12 per card (valued at $250) for a turnaround time of 50 days