Who is the one actually charging for the state-filing, where is the money going? Is it the state, or the service provider?

This also reminds me of my apartment building, which has an “amenity fee” of $100/month for rooftop+gym usage, on top of the normal advertised rent. In the leasing office, I asked for details about it, and was told it’s a “non-optional” required fee which everybody has to pay. Stuff like that should be illegal - the only reason they would do that is to advertise lower rent.