Is the cost of a shell house realistic?

Offers are now gradually being obtained - the first indication, however, was as described above.

now slowly caught up - but the first indication was as described above. And therefore I am simply asking for further experiences and opinions on whether this could fit or is utopian.

My experience is that I can get to the point of a shell construction more cheaply with an architect and self-contracting than having it built by a general contractor.

But it depends on the individual case.