The movie was mostly financed by crowd funding. All people and companies funded the movie are mentioned at the closing credits.
Christoph Maria Herbst, who in real life doesn't wear a beard nor the typical Stromberg-style half-bald head, needs to start growing his hair about 5-6 weeks before filming begins so that the Stromberg-esque hairline stands out. For the beard, which he refers to as the "toilet bowl," Herbst needs about three weeks.