diff --git a/src/main/java/com/alttd/fishingevent/gui/windows/PrizesWindow.java b/src/main/java/com/alttd/fishingevent/gui/windows/PrizesWindow.java
index 1d9b357..e2d3dbb 100644
--- a/src/main/java/com/alttd/fishingevent/gui/windows/PrizesWindow.java
+++ b/src/main/java/com/alttd/fishingevent/gui/windows/PrizesWindow.java
@@ -20,10 +20,18 @@ public class PrizesWindow extends GUI {
 
     private final Logger logger;
     private final ItemStack alreadyPurchasedItem = new ItemStack(Material.BARRIER, 1);
+    private final List<Prize> prizes;
+    private final Player player;
 
     public PrizesWindow(Player player, Logger logger, List<Prize> prizes) {
         super(InventoryType.CHEST, MiniMessage.miniMessage().deserialize(Messages.GUI.PRIZES_GUI_NAME));
         this.logger = logger;
+        this.prizes = prizes;
+        this.player = player;
+        updateGUI();
+    }
+
+    private void updateGUI() {
         int i = 0;
         for (Prize prize : prizes) {
             if (player.hasPermission(prize.permission()))
@@ -39,6 +47,10 @@ public class PrizesWindow extends GUI {
     }
 
     private void buy(Player player, Prize prize) {
+        if (player.hasPermission(prize.permission())) {
+            alreadyPurchased(player, prize);
+            return;
+        }
         UUID uuid = player.getUniqueId();
         PointsManagement pointsManagement = PointsManagement.getInstance();
         int playerPoints = pointsManagement.getPoints(uuid);
@@ -63,7 +75,9 @@ public class PrizesWindow extends GUI {
                 Placeholder.parsed("remaining_points", String.valueOf(remainingPoints)),
                 Placeholder.parsed("prize", prize.name())
         ));
-        player.getServer().dispatchCommand(player.getServer().getConsoleSender(), prize.command().replace("<player>", player.getName()));
+        player.getServer().dispatchCommand(player.getServer().getConsoleSender(), prize.command().replaceAll("<user>", player.getName()));
+        updateGUI();
+        player.updateInventory();
     }
 
     @Override