The market prices definately are not as sensative as the old game. The biggest drop i got was for silver. I was playing as Stuyvesent and it went from 19 to 16. I remember in the old game that would have been more like 13 or 14 with the amount of silver i sent over. But then i just finished a game with the english and the prices didn't change too much either.
The one thing i miss in the new version is the lack of a customs house
. I guess that was too overpowered.