diff --git a/uncloud/uncloud_pay/models.py b/uncloud/uncloud_pay/models.py
index 8e41e24..f5639c4 100644
--- a/uncloud/uncloud_pay/models.py
+++ b/uncloud/uncloud_pay/models.py
@@ -163,5 +163,9 @@ class Product(models.Model):
     def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
         pass # To be implemented in child.
 
+    @property
+    def setup_fee(self):
+        return 0
+
     class Meta:
         abstract = True
diff --git a/uncloud/uncloud_vm/serializers.py b/uncloud/uncloud_vm/serializers.py
index cb60cfe..4257a03 100644
--- a/uncloud/uncloud_vm/serializers.py
+++ b/uncloud/uncloud_vm/serializers.py
@@ -12,9 +12,9 @@ class VMHostSerializer(serializers.HyperlinkedModelSerializer):
 class VMProductSerializer(serializers.HyperlinkedModelSerializer):
     class Meta:
         model = VMProduct
-        fields = ['uuid', 'description', 'order', 'owner', 'status', 'name', \
+        fields = ['uuid', 'order', 'owner', 'status', 'name', \
                 'cores', 'ram_in_gb']
-        read_only_fields = ['uuid', 'description', 'order', 'owner', 'status']
+        read_only_fields = ['uuid', 'order', 'owner', 'status']
 
 class VMSnapshotProductSerializer(serializers.ModelSerializer):
     class Meta:
diff --git a/uncloud/ungleich_service/models.py b/uncloud/ungleich_service/models.py
index ac1f90e..0e84f62 100644
--- a/uncloud/ungleich_service/models.py
+++ b/uncloud/ungleich_service/models.py
@@ -9,12 +9,18 @@ class MatrixServiceProduct(Product):
     setup_fee = 30
 
     description = "Managed Matrix HomeServer"
+
+    # Specific to Matrix-as-a-Service
     vm = models.ForeignKey(
             VMProduct, on_delete=models.CASCADE
             )
+    domain = models.CharField(max_length=255, default='domain.tld')
 
     def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
         if recurring_period == RecurringPeriod.PER_MONTH:
             return monthly_managment_fee + vm.recurring_price(RecurringPeriod.PER_MONTH)
         else:
             raise Exception('Invalid recurring period for VM Product pricing.')
+
+    def setup_fee(self):
+        return setup_fee
diff --git a/uncloud/ungleich_service/serializers.py b/uncloud/ungleich_service/serializers.py
index 54737e9..ffd206f 100644
--- a/uncloud/ungleich_service/serializers.py
+++ b/uncloud/ungleich_service/serializers.py
@@ -1,7 +1,11 @@
 from rest_framework import serializers
 from .models import MatrixServiceProduct
+from uncloud_vm.serializers import VMProductSerializer
 
 class MatrixServiceProductSerializer(serializers.ModelSerializer):
+    vm = VMProductSerializer()
+
     class Meta:
         model = MatrixServiceProduct
-        fields = '__all__'
+        fields = ['uuid', 'order', 'owner', 'status', 'vm', 'domain']
+        read_only_fields = ['uuid', 'order', 'owner', 'status']