diff --git a/membershipworks/models.py b/membershipworks/models.py
index 0c969ab..7c18cb4 100644
--- a/membershipworks/models.py
+++ b/membershipworks/models.py
@@ -592,10 +592,10 @@ class EventTicketTypeManager(models.Manager["EventTicketType"]):
             ),
             is_members_ticket=(Q(restrict_to__isnull=False)),
             materials=Case(
-                When(Q(event__materials_fee_included_in_price__isnull=True), None),
                 When(
                     (
                         Q(event__materials_fee_included_in_price=True)
+                        | Q(event__materials_fee=0)
                         & Q(event__materials_fee__isnull=False)
                     ),
                     ExpressionWrapper(
@@ -603,6 +603,7 @@ class EventTicketTypeManager(models.Manager["EventTicketType"]):
                         output_field=models.DecimalField(),
                     ),
                 ),
+                When(Q(event__materials_fee_included_in_price__isnull=True), None),
                 default=0,
                 output_field=models.DecimalField(),
             ),