Sewage costs - I am somewhat stunned

We were newly connected after the parcel division.
By the way, we infiltrate, so no price per sqm.
I spoke with the municipality... they seemed quite empathetic and said that the civil engineers are very expensive at the moment - simply due to economic conditions. They were sorry. Well - I had expected little else.

At our place, the trench u for the connection was done right away by our civil engineer (who also handled all other earthworks). He then directly coordinated with the respective waterworks, who immediately carried out the connection including prior flushing.

Not permitted with us. Work on the street (in the public area) cannot be privately commissioned.

Ok, we also had the advantage that the lines (water, sewage, and telecom) run through the green strip directly in front of our property