It usually works retrospectively as well, with an acquaintance it cost 600€. They only made a small hole, the cable is "shot" into the house. Changed I would and will also have both done right away.
That is really cheap with you.
Currently, Unitymedia wants 1,651 euros with a contract and 2,100 euros without.
The cable is laid together with other providers.
The house is in the second row about 25 meters from the street.
I can top that...5,500 euros for Unitymedia, but nothing is available yet on my street, so I would have been the first financer for the street (by the way, it is an existing area, not a new development).
I definitely wanted cable and Telekom connection, TV via SAT, so that I am completely flexible. And I had gotten very used to the bandwidth of Unitymedia in the rental apartment. Now without broadband cable - maybe something will come later.