Quote Originally Posted by Novellus View Post
I always wondered about the expensive port upgrades--- are they worth it?
To the best of my knowledge, they have the same effect as a normal upgrade, but at ten times the cost. So the answer is no, unless the city is really profitable and you have plenty of time for it to earn itself back.

BTW, You can check out the projected profit as a result of the upgrade in the city detail scroll: the shaded icons indicate the anticipated increase.