If you're one of those collector types who'll be wanting just about everything that Injustice 2 has to offer, $99.99 US dollars will be the price for the Ultimate Edition. The official Injustice 2 site lists this edition of the game with the following features:
• 9 DLC characters
• Physical or Digital download of the game
• Reverse Flash Costume and voice pack (alt Flash skin)
• John Stewart Green Lantern costume and voice pack (alt GL skin)
• Power Girl costume and voice pack (alt Supergirl skin)
• 2 gear shader packs
You can purchase all the editions over at this link. Is this worth the money?