Does anyone know how the revenue for trade missions is calculated? In my current game I am playing as Japan in Rhye's and Fall of Civilization. My first Great Person was a Merchant and I sent him on a merry trip to Europe. He appeared there just as France spawned, but after arriving in Paris, the trade mission revenue turned out to be a meagre 900 gold. I don't know whether it's better to grab the money now or to wait some time for a juicier reward.