Include course price in course_about template context if either the ecommerce…

Include course price in course_about template context if either the ecommerce service is enabled or shoppingcart is enabled

lms/djangoapps/courseware/views/views.py

@@ -510,7 +510,8 @@ def course_about(request, course_id):
         ecommerce_bulk_checkout_link = ''
         professional_mode = None
         ecomm_service = EcommerceService()
-        if ecomm_service.is_enabled(request.user) and (
+        _is_ecomm_service_enabled = ecomm_service.is_enabled(request.user)
+        if _is_ecomm_service_enabled and (
                 CourseMode.PROFESSIONAL in modes or CourseMode.NO_ID_PROFESSIONAL_MODE in modes
         ):
             professional_mode = modes.get(CourseMode.PROFESSIONAL, '') or \
@@ -519,11 +520,14 @@ def course_about(request, course_id):
             if professional_mode.bulk_sku:
                 ecommerce_bulk_checkout_link = ecomm_service.checkout_page_url(professional_mode.bulk_sku)
 
-        # Find the minimum price for the course across all course modes
-        registration_price = CourseMode.min_course_price_for_currency(
-            course_key,
-            settings.PAID_COURSE_REGISTRATION_CURRENCY[0]
-        )
+        # We need to look up the price from the CourseMode only when the EcommerceService is enabled OR
+        # the legacy shoppingcart ecommerce implementation is enabled.
+        registration_price = 0
+        if _is_ecomm_service_enabled or _is_shopping_cart_enabled:
+            registration_price = CourseMode.min_course_price_for_currency(
+                course_key,
+                settings.PAID_COURSE_REGISTRATION_CURRENCY[0]
+            )
         course_price = get_cosmetic_display_price(course, registration_price)
         can_add_course_to_cart = _is_shopping_cart_enabled and registration_price