diff --git a/inventory.py b/inventory.py
index 7810e73..b143862 100644
--- a/inventory.py
+++ b/inventory.py
@@ -117,7 +117,7 @@ class Inventory( object ):
             container_id = rows[0][0]
         return container_id
         
-    def get_item_price(self, item_id, include_contents=False):
+    def get_item_price(self, item_id, include_contents=False, include_maintenance=False):
         """
         :param str item_id: the identifier of an inventory item (a machine (eg simpa-switch002), a group of machines (ceph), etc.)
         :return float: the price of the item exluding taxes
@@ -127,12 +127,19 @@ class Inventory( object ):
             item_price = 0.0
         else:
             item_price = float(item_price)
+        if include_maintenance:
+            # INSERT INTO `maintenance` (`maintenance_id`, `machine_id`, `price_ex_vat`, `command_id`, `comment`) VALUES
+            rows = self._sql_reader.query("SELECT price_ex_vat FROM maintenance WHERE machine_id='%s'" % item_id)
+            for row in rows:
+                maintenance_price_ex_vat = float(row[0])
+                item_price += maintenance_price_ex_vat
+            
         if include_contents:
             # add the price of included parts
             rows = self._sql_reader.query("SELECT part_id FROM container WHERE container_id='%s'" % item_id)
             for row in rows:
                 part_id = row[0]
-                item_price += self.get_item_price(part_id, include_contents)
+                item_price += self.get_item_price(part_id, include_contents, include_maintenance)
         #print(u'price of %s : %.2f € HT' % (item_id, item_price))
         return item_price