diff --git a/src/main/java/com/alttd/config/Config.java b/src/main/java/com/alttd/config/Config.java
index 879f054..531c624 100644
--- a/src/main/java/com/alttd/config/Config.java
+++ b/src/main/java/com/alttd/config/Config.java
@@ -1,5 +1,6 @@
 package com.alttd.config;
 
+import com.alttd.objects.ItemStackComparator;
 import com.alttd.objects.VillagerType;
 import com.alttd.util.Logger;
 import org.bukkit.Material;
@@ -7,9 +8,7 @@ import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.inventory.ItemStack;
 
 import java.io.File;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
 
 public final class Config extends AbstractConfig {
 
@@ -166,8 +165,8 @@ public final class Config extends AbstractConfig {
         });
     }
 
-    private static HashSet<ItemStack> loadProducts(ConfigurationSection productsSection) {
-        HashSet<ItemStack> products = new HashSet<>();
+    private static TreeSet<ItemStack> loadProducts(ConfigurationSection productsSection) {
+        TreeSet<ItemStack> products = new TreeSet<>(new ItemStackComparator());
         if (productsSection == null)
             return products;
 
diff --git a/src/main/java/com/alttd/objects/ItemStackComparator.java b/src/main/java/com/alttd/objects/ItemStackComparator.java
new file mode 100644
index 0000000..f92078a
--- /dev/null
+++ b/src/main/java/com/alttd/objects/ItemStackComparator.java
@@ -0,0 +1,12 @@
+package com.alttd.objects;
+
+import org.bukkit.inventory.ItemStack;
+
+import java.util.Comparator;
+
+public class ItemStackComparator implements Comparator<ItemStack> {
+    @Override
+    public int compare(ItemStack o1, ItemStack o2) {
+        return o1.getType().name().compareTo(o2.getType().name());
+    }
+}
diff --git a/src/main/java/com/alttd/objects/VillagerType.java b/src/main/java/com/alttd/objects/VillagerType.java
index 69923cb..ce6911b 100644
--- a/src/main/java/com/alttd/objects/VillagerType.java
+++ b/src/main/java/com/alttd/objects/VillagerType.java
@@ -5,6 +5,7 @@ import org.bukkit.inventory.ItemStack;
 
 import java.util.HashSet;
 import java.util.Set;
+import java.util.TreeSet;
 
 public class VillagerType {
     private static final Set<VillagerType> villagerTypes = new HashSet<>();
@@ -30,7 +31,7 @@ public class VillagerType {
     private final Set<ItemStack> selling;
     private final Villager.Profession profession;
 
-    public VillagerType(String name, String displayName, Set<ItemStack> buying, Set<ItemStack> selling, String profession) {
+    public VillagerType(String name, String displayName, TreeSet<ItemStack> buying, TreeSet<ItemStack> selling, String profession) {
         this.name = name;
         this.displayName = displayName;
         this.buying = buying;