Hello. You did not enter the answer options, but what explains the discount for users who buy directly from Epic is the removal of the taxation levied by Google and Apple on games hosted on their systems.
Explanation:
Epic's games were hosted and exposed for sale through Google and Apple platforms. This made the price of these games, when purchased by these platforms, higher. That's because to host a game, Google and Apple charge a percentage of the sales made for that game. This percentage must be included in the final price.
However, buying the game directly from Epic, this percentage is not charged and the customer receives a "discount" on the final price.
