I know how much effort goes into a city map, having come from a city project a little while ago.
Though, I don't think full rights for it justifies $200. And what is more, the bigger the city the complixity of it goes up exponentially.

That said, I'm more into fantasy mapping, but I am considering taking this up.
Though, I'd either do a day map OR a night map. $200 does not justify doing both at all.

I agree with my fellow guild members. A VERY rough sketch of where you want the main buildings to be will help a lot in making an educated decision.