Will I receive a discount for add-ons if I already pre-ordered or own the game?

If you already own a version of a game, or have pre-ordered it, you will not automatically receive a discounted rate for a DLC or Add-on. The price for an Add-on or DLC in the Epic Games Store is determined by the developer.

Some editions of a game include the DLCs and add-ons automatically, which can be seen by clicking the Add-Ons heading just under the game title. Each game version may have a different setup with DLCs and Add-ons being included, so be sure to refer to the specific version's store page for more details.