>>2090701Do the following
>go to the diplomacy tab with a partner>demand 1 unit of a good>offer 1 unit of the same goodAt this point you will notice that the price you sell the good is not at all the price showed on the sidebar
As in, the nominal buy/sell price of wheat (I don't even sell it, so no dumping) is 12/9 coins. However, the actual rate it goes is 14/3.
Consider that you also pay tariffs on buying the resource you want, a comparative advantage of more than 10x I would be needed around 4.5x comparative advantage to make it worth it.
The way tech works the player rarely get this much comparative advantage in production efficiency, so it is almost always better to produce locally, even at bad production rates