NPC buy/sell use DB values

src/engine/objects/NPC.java

@@ -121,8 +121,8 @@ public class NPC extends AbstractCharacter {
 
             // this.buyPercent = rs.getFloat("npc_buyPercent");
 
-            this.buyPercent = .33f;
+            this.buyPercent = rs.getFloat("npc_buyPercent");
-            this.sellPercent = 1;
+            this.sellPercent = rs.getFloat("npc_sellPercent");
 
             this.setRot(new Vector3f(0, rs.getFloat("npc_rotation"), 0));