This is a new historic low according to isthereanydeal.com
https://isthereanydeal.com/game/alan-wake-2/info/
Looks like it's valid until mid January, and for the time being you get 10% of the purchase price added as a credit to your Epic Games account
Also realised that the upgrade to the Deluxe Edition is 50% off as well
https://store.epicgames.com/en-US/p/alan-wake-2--deluxe-upgrā¦
Meaning you can get the base edition + deluxe upgrade for $53.17 (and get 10% of that back in account credit) vs buying the Deluxe Edition straight up for $106