Dying Light: The Beast is claiming you save 350€ if you buy the Deluxe Edition but only because the only way to buy 4/5s of the items in it is by buying the Deluxe or Definitive Edition.

Stupid bundle prices are basically false advertising. No you cannot buy the Wallpaper Pack or Soundtrack for 90 or 60€ so you will not save those costs when you buy the bundle