Upgrade to Delux Edition
I got the basic version on Epic. I really enjoyed the first episode, so I wanted to upgrade my version to the Deluxe edition because I think the game deserves it. But I can't find that option anywhere. I can't even return the original version to Epic and buy the Delux because I spent more than two hours in the game.
It would need some DLC to upgrade the standard version to Delux.