Game-level conditions outside either island government. Both islands face the same world market.
Trade behaviorAdaptive Demand
Full British obeys posted island prices and quantities. Adaptive Demand lets world supply and demand respond to price and to the other island.
Port warehousesOff
Off preserves one-day inventory behavior. On retains unsold exports at their destination ports; freight is paid when goods move to the port.
Export pricesSelected island · 30-day averages
World ref is the base export price before daily variation and the adaptive quantity curve. Island average includes only days when the selected island actually exported that commodity; domestic is the trailing average competing domestic price.
Import pricesSelected island · 30-day averages
Island average includes only days when the selected island actually imported that commodity; domestic is the trailing average competing domestic price.
World export marketReference · Proxy · Elasticity
Reference and proxy volumes are shown in thousands per day; values below 10 accept/display one decimal place. Reference volume is the total cumulative market quantity at the reference export price. Proxy supply is rest-of-world production already occupying that curve before island exports. Lower elasticity makes price react more strongly to added surplus.
World import marketReference · Proxy · Elasticity
Reference and proxy volumes are shown in thousands per day; values below 10 accept/display one decimal place. Proxy demand is rest-of-world purchasing already occupying the supply curve before island imports. This keeps small island purchases near the ordinary world price while large purchases can still move it.
1.00 is strictly proportional. Higher values give larger committed export offers more access to above-reference-price buyers; the advantage fades to proportional at the world reference price.