Zweihänder commercial rights

Does anyone know how much (if anything) Logan charges for commercial usage of his album Zweihänder? I'm wanting to use it as filler for a game I am currently developing so I actually have something good to listen to while testing, as well as maybe include it in a couple videos that probably wouldn't be making money anyway.

Basically, how much does he charge and how would I go about contacting him specifically about this, to use the music in a game as a placeholder (not sold until music removed) and possibly in non monetizing videos? So not really commercial, but could be considered such.

[email protected]

That was painfully simple, and why I did not think about that I have no idea.