Index: binaries/data/mods/public/simulation/components/Trader.js
===================================================================
--- binaries/data/mods/public/simulation/components/Trader.js
+++ binaries/data/mods/public/simulation/components/Trader.js
@@ -11,7 +11,7 @@
 	"<a:example>" +
 		"<GainMultiplier>0.75</GainMultiplier>" +
 	"</a:example>" +
-	"<element name='GainMultiplier' a:help='Trader gain for a 100m distance'>" +
+	"<element name='GainMultiplier' a:help='Trader gain percentage from the route between markets'>" +
 		"<ref name='positiveDecimal'/>" +
 	"</element>";
 
Index: binaries/data/mods/public/simulation/helpers/TraderGain.js
===================================================================
--- binaries/data/mods/public/simulation/helpers/TraderGain.js
+++ binaries/data/mods/public/simulation/helpers/TraderGain.js
@@ -37,10 +37,11 @@
 
 	// Calculate ordinary Euclidean distance between markets.
 	// We don't use pathfinder, because ordinary distance looks more fair.
-	let distanceSq = firstMarketPosition.distanceToSquared(secondMarketPosition);
+	let distance = firstMarketPosition.distanceTo(secondMarketPosition);
+	let cmpTerrain = Engine.QueryInterface(SYSTEM_ENTITY, IID_Terrain);
 	// We calculate gain as square of distance to encourage trading between remote markets
-	// and gainMultiplier corresponds to the gain for a 100m distance
-	gain.traderGain = gainMultiplier * distanceSq / 10000;
+	// and gainMultiplier corresponds to the gain percentage from the income of given distance
+	gain.traderGain = gainMultiplier * 1024 * distance * Math.tanh(distance / cmpTerrain.GetMapSize()) / 10000;
 
 	gain.market1Owner = cmpMarket1Player.GetPlayerID();
 	gain.market2Owner = cmpMarket2Player.GetPlayerID();