diff --git a/src/main/java/xyz/alexcrea/cuanvil/gui/config/settings/EnchantCostSettingsGui.java b/src/main/java/xyz/alexcrea/cuanvil/gui/config/settings/EnchantCostSettingsGui.java
index 3bd923bf..2fbc47ad 100644
--- a/src/main/java/xyz/alexcrea/cuanvil/gui/config/settings/EnchantCostSettingsGui.java
+++ b/src/main/java/xyz/alexcrea/cuanvil/gui/config/settings/EnchantCostSettingsGui.java
@@ -285,14 +285,14 @@ public class EnchantCostSettingsGui extends IntSettingsGui {
          */
         @Override
         public int getConfiguredValue() {
-            return ConfigOptions.INSTANCE.enchantmentValue(enchantment, false);
+            return ConfigOptions.INSTANCE.enchantmentValue(enchantment, false, false);
         }
 
         /**
          * @return The configured value for the enchant setting book value.
          */
         public int getConfiguredBookValue() {
-            return ConfigOptions.INSTANCE.enchantmentValue(enchantment, true);
+            return ConfigOptions.INSTANCE.enchantmentValue(enchantment, false, true);
         }
 
         @Override
diff --git a/src/main/kotlin/io/delilaheve/util/ConfigOptions.kt b/src/main/kotlin/io/delilaheve/util/ConfigOptions.kt
index dddb64d7..9b0c4cd0 100644
--- a/src/main/kotlin/io/delilaheve/util/ConfigOptions.kt
+++ b/src/main/kotlin/io/delilaheve/util/ConfigOptions.kt
@@ -86,6 +86,7 @@ object ConfigOptions {
 
     // Keys for specific enchantment values
     private const val KEY_BOOK = "book"
+    private const val KEY_BOOK_ON_BOOK = "book_on_book"
     private const val KEY_ITEM = "item"
 
     // Debug flag
@@ -578,14 +579,15 @@ object ConfigOptions {
      */
     fun enchantmentValue(
         enchantment: CAEnchantment,
-        isFromBook: Boolean
+        isToBook: Boolean,
+        isFromBook: Boolean,
     ): Int {
         // Test namespace
-        var limit = enchantmentValue(enchantment.key.toString(), isFromBook)
+        var limit = enchantmentValue(enchantment.key.toString(), isToBook, isFromBook)
         if (limit != null) return limit
 
         // Test legacy (name only)
-        limit = enchantmentValue(enchantment.enchantmentName, isFromBook)
+        limit = enchantmentValue(enchantment.enchantmentName, isToBook, isFromBook)
         if (limit != null) return limit
 
         // get default (and test old legacy if present)
@@ -599,13 +601,22 @@ object ConfigOptions {
      */
     private fun enchantmentValue(
         enchantmentName: String,
-        isFromBook: Boolean
+        isToBook: Boolean,
+        isFromBook: Boolean,
     ): Int? {
         val typeKey = if (isFromBook) KEY_BOOK else KEY_ITEM
         val path = "${ENCHANT_VALUES_ROOT}.${enchantmentName}.$typeKey"
-        return CustomAnvil.instance
-            .config
-            .getInt(path, DEFAULT_ENCHANT_VALUE - 1)
+
+        val config = ConfigHolder.DEFAULT_CONFIG.config
+        if(isFromBook && isToBook) {
+            val specialPath = "${ENCHANT_VALUES_ROOT}.${enchantmentName}.$KEY_BOOK_ON_BOOK"
+
+            if(config.isInt(specialPath))
+                return config.getInt(specialPath)
+                    .takeIf { it >= DEFAULT_ENCHANT_VALUE }
+        }
+
+        return config.getInt(path, DEFAULT_ENCHANT_VALUE - 1)
             .takeIf { it >= DEFAULT_ENCHANT_VALUE }
     }
 
diff --git a/src/main/kotlin/xyz/alexcrea/cuanvil/util/anvil/AnvilXpUtil.kt b/src/main/kotlin/xyz/alexcrea/cuanvil/util/anvil/AnvilXpUtil.kt
index 9d2f5420..78ea8830 100644
--- a/src/main/kotlin/xyz/alexcrea/cuanvil/util/anvil/AnvilXpUtil.kt
+++ b/src/main/kotlin/xyz/alexcrea/cuanvil/util/anvil/AnvilXpUtil.kt
@@ -23,6 +23,7 @@ import xyz.alexcrea.cuanvil.dependency.economy.EconomyManager
 import xyz.alexcrea.cuanvil.group.ConflictType
 import xyz.alexcrea.cuanvil.util.AnvilTitleUtil
 import xyz.alexcrea.cuanvil.util.dialog.AnvilRenameDialogUtil
+import kotlin.math.sqrt
 
 object AnvilXpUtil {
 
@@ -35,8 +36,9 @@ object AnvilXpUtil {
         inventory: AnvilInventory,
         view: InventoryView,
         player: Player,
-        result: AnvilResult) {
-        if(result.item == null) {
+        result: AnvilResult
+    ) {
+        if (result.item == null) {
             onNoResult(player, view)
             return
         }
@@ -246,7 +248,8 @@ object AnvilXpUtil {
     fun getRightValues(left: ItemStack, right: ItemStack, result: ItemStack, cost: AnvilCost) {
         // Calculate right value and illegal enchant penalty
 
-        val rightIsFormBook = right.isEnchantedBook()
+        val isToBook = left.isEnchantedBook()
+        val isFromBook = right.isEnchantedBook()
         val rightEnchs = EnchantmentApi.getEnchantments(right)
         val resultEnchs = EnchantmentApi.getEnchantments(result)
         val resultEnchsKeys = HashMap(resultEnchs)
@@ -274,22 +277,21 @@ object AnvilXpUtil {
             // We know "enchantment.key in resultEnchs" true
             val resultLevel = resultEnchs[enchantment.key]!!
 
-            val enchantmentMultiplier = ConfigOptions.enchantmentValue(enchantment.key, rightIsFormBook)
+            val enchantmentMultiplier = ConfigOptions.enchantmentValue(enchantment.key, isFromBook, isToBook)
             val value = resultLevel * enchantmentMultiplier
             CustomAnvil.log("Value for sacrifice item ${enchantment.key.enchantmentName} level ${enchantment.value} is $value ($resultLevel * $enchantmentMultiplier)")
             rightValue += value
 
         }
-        if(ConfigOptions.includeLeftEnchantmentForCost) {
-            val leftIsFormBook = left.isEnchantedBook()
+        if (ConfigOptions.includeLeftEnchantmentForCost) {
             val leftEnchs = EnchantmentApi.getEnchantments(left)
             for (enchantment in leftEnchs) {
                 // Do not process enchantment that are present on the sacrifice
-                if(rightEnchs.contains(enchantment.key)) continue
+                if (rightEnchs.contains(enchantment.key)) continue
 
                 val resultLevel = resultEnchs.getOrDefault(enchantment.key, 0)
 
-                val enchantmentMultiplier = ConfigOptions.enchantmentValue(enchantment.key, leftIsFormBook)
+                val enchantmentMultiplier = ConfigOptions.enchantmentValue(enchantment.key, isFromBook, isToBook)
                 val value = resultLevel * enchantmentMultiplier
                 CustomAnvil.log("Value for left item ${enchantment.key.enchantmentName} level ${enchantment.value} is $value ($resultLevel * $enchantmentMultiplier)")
                 leftValue += value
@@ -312,15 +314,15 @@ object AnvilXpUtil {
      */
     fun calculateLevelForXp(xp: Int): Int {
         return when {
-            xp <= 352 -> (Math.sqrt((xp + 9).toDouble()) - 3).toInt()
+            xp <= 352 -> (sqrt((xp + 9).toDouble()) - 3).toInt()
             xp <= 1507 -> {
                 val inner = (2.0 / 5.0) * (xp - 7839.0 / 40.0)
-                (81.0 / 10.0 + Math.sqrt(inner)).toInt()
+                (81.0 / 10.0 + sqrt(inner)).toInt()
             }
 
             else -> {
                 val inner = (2.0 / 9.0) * (xp - 54215.0 / 72.0)
-                (325.0 / 18.0 + Math.sqrt(inner)).toInt()
+                (325.0 / 18.0 + sqrt(inner)).toInt()
             }
         }
     }
diff --git a/src/test/java/xyz/alexcrea/cuanvil/config/DefaultConfigTests.java b/src/test/java/xyz/alexcrea/cuanvil/config/DefaultConfigTests.java
index ac3f73ea..a92b1d71 100644
--- a/src/test/java/xyz/alexcrea/cuanvil/config/DefaultConfigTests.java
+++ b/src/test/java/xyz/alexcrea/cuanvil/config/DefaultConfigTests.java
@@ -49,8 +49,8 @@ public class DefaultConfigTests extends SharedCustomAnvilTest {
         CAEnchantment enchantment = CAEnchantmentRegistry.getInstance().getByKey(key);
         Assertions.assertNotNull(enchantment, "Enchantment was somehow not found");
 
-        int itemValue = ConfigOptions.INSTANCE.enchantmentValue(enchantment, false);
-        int bookValue = ConfigOptions.INSTANCE.enchantmentValue(enchantment, true);
+        int itemValue = ConfigOptions.INSTANCE.enchantmentValue(enchantment, false, false);
+        int bookValue = ConfigOptions.INSTANCE.enchantmentValue(enchantment, false, true);
 
         EnchantmentRarity rarity = enchantment.defaultRarity();