When this is published there are 4 days left for a bundle of four TDE PC games. The price of the games is reduced from 34.99 € to 3.49 €. It is on Humblebundle. For the bundle to get the games you need a steam account (https://store.steampowered.com/). On steam you get than actually the game after buying it on Humblebundle and connecting your accounts.
The bundle is here: https://www.humblebundle.com/store/the-dark-eye-universe-bundle