v0.4.1: a couple more price changes

src/com/shatteredpixel/shatteredpixeldungeon/items/armor/Armor.java

@@ -366,7 +366,9 @@ public class Armor extends EquipableItem {
 	
 	@Override
 	public int price() {
-		int price = 20 * (1 << (tier - 1));
+		if (seal != null) return 0;
+
+		int price = 20 * tier;
 		if (hasGoodGlyph()) {
 			price *= 1.5;
 		}

src/com/shatteredpixel/shatteredpixeldungeon/items/artifacts/CloakOfShadows.java

@@ -162,6 +162,11 @@ public class CloakOfShadows extends Artifact {
 		}
 	}
 
+	@Override
+	public int price() {
+		return 0;
+	}
+
 	public class cloakRecharge extends ArtifactBuff{
 		@Override
 		public boolean act() {

src/com/shatteredpixel/shatteredpixeldungeon/items/weapon/melee/MagesStaff.java

@@ -281,6 +281,11 @@ public class MagesStaff extends MeleeWeapon {
 		}
 	}
 
+	@Override
+	public int price() {
+		return 0;
+	}
+
 	private final WndBag.Listener itemSelector = new WndBag.Listener() {
 		@Override
 		public void onSelect( final Item item ) {

src/com/shatteredpixel/shatteredpixeldungeon/items/weapon/melee/MeleeWeapon.java

@@ -104,7 +104,7 @@ public class MeleeWeapon extends Weapon {
 	
 	@Override
 	public int price() {
-		int price = 20 * (1 << (tier - 1));
+		int price = 20 * tier;
 		if (hasGoodEnchant()) {
 			price *= 1.5;
 		}