Quote Originally Posted by econ21
I think Jambo's point is that you can usually get that information by queueing the building and looking at the settlement details - the difference between actual income and what it would be with the faded building icon. There's no effect with markets in my game so far.
Well, then I think the problem is that you don't see the result before actually finishing the building. I have a campaign with Spain where I first conquered Valencia and Zaragoza. I don't have the excact numbers, but my income increased a lot when i built Grainmarket and even more when I built market. It wouldn't be logical to see this before the building was finished would it? The income changes from turn to turn, depending on where/who your trading with doesn't it?