Without details it's hard to compare. Does that include initial construction, transit, etc? Is that from a data center, or will they run it to a telecom closest in our 1960s office building?
That's excluding construction (if you rent 2+ years, it's inckuding construction), including transit, and goes to any building in any of the cities where they offer it. Which is about 3 cities right now, including Kiel.
If you're paying 500-700$/month for a 100mbps line, then something seems very wrong.