Wooden house 1.5 floors with 8x5m floor area - How much should it cost?

Ever looked at prefabricated houses? Example with 120mm block beams, triple glazing, without roof tiles and construction at €68,000. In addition, ground slab, technology, floor coverings, sanitary facilities, and house connections. It really won't be cheap. But it's okay as a price example.

that depends on your ideas, a super turnkey holiday home I also see at 150K€+x, a kit in EL with a carpenter from 20K€ + equipment

How did things continue for you? Have you received any offers? I'm also interested in such a topic, still dreaming of the holiday home in the Bavarian Forest...