diff --git a/strings.py b/strings.py
index b42aade..de05966 100644
--- a/strings.py
+++ b/strings.py
@@ -92,6 +92,9 @@ menu_products = "📝️ Prodotti"
 # Admin menu: orders
 menu_orders = "📦 Ordini"
 
+# Menu: transactions
+menu_transactions = "💳 Transazioni"
+
 # Admin menu: go to user mode
 menu_user_mode = "👤 Passa alla modalità utente"
 
diff --git a/utils.py b/utils.py
index 5e57d7c..2805739 100644
--- a/utils.py
+++ b/utils.py
@@ -19,6 +19,9 @@ class Price:
             # Copy self
             self.value = value.value
 
+    def __repr__(self):
+        return f"<Price of value {self.value}>"
+
     def __str__(self):
         return currency_format_string.format(symbol=currency_symbol, value="{0:.2f}".format(self.value / (10 ** int(config["Payments"]["currency_exp"]))))
 
@@ -50,19 +53,19 @@ class Price:
         return Price(self.value - Price(other).value)
 
     def __mul__(self, other):
-        return Price(self.value * Price(other).value)
+        return Price(int(self.value * other))
 
     def __floordiv__(self, other):
-        return Price(self.value // Price(other).value)
+        return Price(int(self.value // other))
 
     def __radd__(self, other):
-        self.__add__(other)
+        return self.__add__(other)
 
     def __rsub__(self, other):
         return Price(Price(other).value - self.value)
 
     def __rmul__(self, other):
-        self.__mul__(other)
+        return self.__mul__(other)
 
     def __iadd__(self, other):
         self.value += Price(other).value
@@ -73,9 +76,10 @@ class Price:
         return self
 
     def __imul__(self, other):
-        self.value *= Price(other).value
+        self.value *= other
+        self.value = int(self.value)
         return self
 
     def __ifloordiv__(self, other):
-        self.value //= Price(other).value
+        self.value //= other
         return self
diff --git a/worker.py b/worker.py
index 3fa3b2d..fd84f37 100644
--- a/worker.py
+++ b/worker.py
@@ -465,9 +465,8 @@ class ChatWorker(threading.Thread):
         # Create the price array
         prices = [telegram.LabeledPrice(label=strings.payment_invoice_label, amount=int(value))]
         # If the user has to pay a fee when using the credit card, add it to the prices list
-        # TODO: there's a bug here
         fee_percentage = float(configloader.config["Credit Card"]["fee_percentage"]) / 100
-        fee_fixed = Price(configloader.config["Credit Card"]["fee_fixed"])
+        fee_fixed = int(configloader.config["Credit Card"]["fee_fixed"])
         total_fee = value * fee_percentage + fee_fixed
         if total_fee > 0:
             prices.append(telegram.LabeledPrice(label=strings.payment_invoice_fee_label, amount=int(total_fee)))
@@ -525,10 +524,14 @@ class ChatWorker(threading.Thread):
         Administrative bot actions should be placed here."""
         # Loop used to return to the menu after executing a command
         while True:
-            # Create a keyboard with the admin main menu
-            keyboard = [[telegram.KeyboardButton(strings.menu_products)],
-                        [telegram.KeyboardButton(strings.menu_orders)],
-                        [telegram.KeyboardButton(strings.menu_user_mode)]]
+            # Create a keyboard with the admin main menu based on the admin permissions specified in the db
+            keyboard = [[strings.menu_user_mode]]
+            if self.admin.edit_products:
+                keyboard.append([strings.menu_products])
+            if self.admin.receive_orders:
+                keyboard.append([strings.menu_orders])
+            if self.admin.view_transactions:
+                keyboard.append([strings.menu_transactions])
             # Send the previously created keyboard to the user (ensuring it can be clicked only 1 time)
             self.bot.send_message(self.chat.id, strings.conversation_open_admin_menu,
                                   reply_markup=telegram.ReplyKeyboardMarkup(keyboard, one_time_keyboard=True))
@@ -716,6 +719,7 @@ class ChatWorker(threading.Thread):
             if isinstance(update, CancelSignal):
                 # Stop the listening mode
                 self.listening_mode = False
+                break
             # If the user pressed the complete order button, complete the order
             elif update.data == "order_complete":
                 # Find the order