diff --git a/app/api/endpoints/order.py b/app/api/endpoints/order.py
index f9ab10c..bf79a9a 100644
--- a/app/api/endpoints/order.py
+++ b/app/api/endpoints/order.py
@@ -103,7 +103,7 @@ def calculate_price(price_request: OrderPriceCalculateRequest,user: UserDB,db: S
                 extra_package_price = float(community.extra_package_price)
                 extra_package_threshold = int(community.extra_package_threshold)
 
-        original_amount = round((base_price + extra_package_price * (package_count - extra_package_threshold)), 2)
+        original_amount = round((base_price + extra_package_price * max(0, package_count - extra_package_threshold)), 2)
         
         result.price_info.package_count = package_count
         result.price_info.pickup_images_count = pickup_images_count