Isolated garden house made of metal and plastic. Which manufacturer?

5*3 m for 7.5 k€ would be a real bargain for a CasaNova! The quality of those things is indeed very good, very elaborate and elegant, and an engineer’s heart laughs during the assembly! But I wouldn’t have bought it for the normal price... Cheers, Andreas

But that was not a house from Biohort. The house was made of sandwich panels in anthracite gray. With a double-leaf door.

Who else knows other manufacturers?
Or are there perhaps companies that manufacture these garden sheds/tool sheds customized for customers?