Because,... I have an amazon.de gift card worth 15 euros.
And,. I do NOT life in germany.
Sadly about the only thing i can do with the card right now is to order something silly and then have it shipped here for half the card's value,. or buy some mp3s (hah as if).

So,. I'm looking for someone from germany who can actually make good use of the card.
In exchange i'm looking for steam store credit of about equal value, or a game copy of Stardew Valley (which can be obtained for 12-14 euro). Which should be profitable for you one way or the other.

Drop me a PM,. add me on steam, either works.
Ask a friend even.