What is the cost of a wastewater connection (holiday bungalow)?

Although I am in Berlin, I think the prices should be similar.
Sewer connection costs about 3000 Eur plus 300 Eur per meter from the main line.
But the 3000 Eur is a sunk cost.
We just received an offer for earthworks:
43 Eur net, but for drinking water. So wastewater doesn't have to be frost-proof, meaning the trench only half as deep. Possibly you can then calculate with 30-35 Eur/m.

I am in Berlin, but I think the prices should be similar.
Sewer connection costs about 3000 Eur plus 300 Eur per meter from the main line.
But you lose the 3000 Eur.
We just received an offer for earthworks:
43 Eur net, but for drinking water. So sewage doesn’t have to be frost-proof, so the trench only half as deep. Maybe you can then expect 30-35 Eur/m.

The depth of the sewer depends on the depth of the connection at the street and the depth at the house. In between you need a certain slope. I know that the connection at the street is about 1.5 m deep for us; back then I stood in the trench up to my shoulders.

According to our water utilities, drinking water pipes can also be shot through, so digging is not necessarily required.

1000 thanks to everyone for the tips and information, that helped me a lot! Have a nice evening everyone!