resource vendor now sells in stack sizes of 500k purchase

src/engine/objects/Contract.java

@@ -201,7 +201,7 @@ public class Contract extends AbstractGameObject {
 
         if(this.getObjectUUID() == 900){
             for(MobEquipment me : this.sellInventory){
-                me.magicValue = Warehouse.getCostForResource(me.getItemBase().getUUID());
+                me.magicValue = Warehouse.getCostForResource(me.getItemBase().getUUID()) * Warehouse.getSellStackSize(me.getItemBase().getUUID());
             }
         }
         if(this.getObjectUUID() == 1202)

src/engine/objects/Warehouse.java

@@ -1455,4 +1455,8 @@ public class Warehouse extends AbstractWorldObject {
 
         return newCost;
     }
+    public static int getSellStackSize(int id){
+
+        return (int)500000 / (getCostForResource(id));
+    }
 }