diff --git a/src/engine/net/client/msg/RefinerScreenMsg.java b/src/engine/net/client/msg/RefinerScreenMsg.java
index 54f5e8e3..4d492f0b 100644
--- a/src/engine/net/client/msg/RefinerScreenMsg.java
+++ b/src/engine/net/client/msg/RefinerScreenMsg.java
@@ -95,7 +95,7 @@ public class RefinerScreenMsg extends ClientNetMsg {
         return this.unknown02;
     }
 
-    public void setUnknown02(int value) {
+    public void setUnknown02(float value) {
         this.unknown02 = value;
     }
 
diff --git a/src/engine/server/world/WorldServer.java b/src/engine/server/world/WorldServer.java
index b7282b94..829b9c90 100644
--- a/src/engine/server/world/WorldServer.java
+++ b/src/engine/server/world/WorldServer.java
@@ -146,7 +146,7 @@ public class WorldServer {
 		NPC npc = NPC.getFromCache(msg.getNpcID());
 
 		if (npc != null)
-			msg.setUnknown02(0); //cost to refine?
+			msg.setUnknown02(npc.sellPercent); //cost to refine?
 
 		Dispatch dispatch = Dispatch.borrow(origin.getPlayerCharacter(), msg);
 		DispatchMessage.dispatchMsgDispatch(dispatch, Enum.DispatchChannel.SECONDARY);