The Dwarven Tradehouse is a Wonder that they are given in their capital that they can move for the same cost as moving the palace. It comes free with the starting city for the khazad and is buildable via construction for the luchirp.
Dwarven Tradehouse
-40% gold income
+10% gold income per copper
+10% gold income per iron
+10% gold income per gems
+10% gold income per gold
+50% gold income per mithril
the basis for this -- this simulates the ability of the dwarfs to trade away excess metals for a profit. the initial penalty is to offset the bonus provided by the first of each of the first 4 metals. i threw in the large boost for mithril because by that time the dwarfs are normally in a vary bad money crunch. i do expect the numbers to be adjusted based on playtest though.
Dwarven Tradehouse
-40% gold income
+10% gold income per copper
+10% gold income per iron
+10% gold income per gems
+10% gold income per gold
+50% gold income per mithril
the basis for this -- this simulates the ability of the dwarfs to trade away excess metals for a profit. the initial penalty is to offset the bonus provided by the first of each of the first 4 metals. i threw in the large boost for mithril because by that time the dwarfs are normally in a vary bad money crunch. i do expect the numbers to be adjusted based on playtest though.