Don't even bother if you have Patrician and/or Port Royale. Yes graphics are better than those but that doesn't matter when you are not even looking. This is a "trade simulation", not an rts, fps or something like that which requires any graphics after all. A few cities (excluding dlc, because i don't have it), a few items to trade the game becomes nothing of a challenge after 3 hours or so.
Price is damn too high also. I pre-ordered it for 40$ which i can easily say that it was the worst gaming decision i have ever made in my 18-19+ years of gaming. Maximum amount i would pay to this game after knowing what it really is is about 10$ and it is a "maybe".
BUT if you don't have Patrician or Port Royale (Patrician 4 was better for trade i think) and have the money or this game is on sale, go for it. It is quite okay. But don't expect you will play it 2-3 hours a day for months or you will go back to it after 3-4 months. You play it for a few days, a few hours a day and game manages to bore the ♥♥♥♥ out of you.