I can see the logic for the tariff. For example in Bonaparte III I am playing as the British. Everyone can make tidy profits sending their traders there while I would make far less money as it is my city and have to send my traders to other European destinations for less gold payout than my competitors.
I could impose a tariff to claw back some of the money but I figure that the profitability of London as a trade destination gives me a political advantage as any enemy that captures London will no longer have it as a trade destination! Well thats my crackpot theory anyway
Not sure how the trade payoffs work in this particular game though!
I believe the factors that effect trade are:
- Trade arrows for city sending trader
- Trade arrows at destination
- Distance from source
- Whether the destination city is on another continent
- Whether you are at war with the target cities nation?
- Whether the commodity is demanded
- Obviously you get more from trading with other nations!
I am also no expert on trade so if there is anything important I have missed then don't hesitate to put me straight.
Playing my turn now!