diff --git a/usage_function/pyproject.toml b/usage_function/pyproject.toml
index 2e446f5..bddcbf9 100644
--- a/usage_function/pyproject.toml
+++ b/usage_function/pyproject.toml
@@ -6,8 +6,8 @@ authors = []
 packages = [
     {include = "usage"},
     {include = "utils"},
-#    {include = "costmanagement"},
     {include = "monthly_usage"},
+    #    {include = "costmanagement"},
 ]
 
 [tool.poetry.dependencies]
diff --git a/usage_function/utils/usage.py b/usage_function/utils/usage.py
index 415a8c8..4732623 100644
--- a/usage_function/utils/usage.py
+++ b/usage_function/utils/usage.py
@@ -108,9 +108,8 @@ def retrieve_usage(usage_data):
         else:
             usage_item.amortised_cost = 0.0
 
-        if usage_item.id in all_items:
-            existing_item = all_items[usage_item.id]
-            # Add to the existing item
+        if existing_item := all_items.get(usage_item.id):
+            # Update the existing item
             existing_item.quantity += usage_item.quantity
             existing_item.effective_price += usage_item.effective_price
             existing_item.cost += usage_item.cost
@@ -118,9 +117,6 @@ def retrieve_usage(usage_data):
             existing_item.total_cost += usage_item.total_cost
             existing_item.unit_price += usage_item.unit_price
 
-            # Update the dict entry
-            all_items[usage_item.id] = existing_item
-
         else:
             all_items[usage_item.id] = usage_item
 
@@ -132,7 +128,7 @@ def retrieve_usage(usage_data):
         datetime.now() - started_processing_at,
     )
 
-    return list(all_items.values())
+    return all_item_list
 
 
 def retrieve_and_send_usage(hostname_or_ip, usage_data):