diff --git a/services/billing.py b/services/billing.py
index a330401..58b6b30 100644
--- a/services/billing.py
+++ b/services/billing.py
@@ -77,51 +77,34 @@ class BillingService(BaseService):
             billing_client = BillingClient(backend.config.BILLING_API_KEY)
 
             basic_deal: Deal = await deal_service.get_by_id(user, request.deal_id, return_raw=True)
-            deals = await deal_service.get_deals_grouped(basic_deal)
+            if basic_deal.group:
+                deals = await self._get_deals_by_group_id(basic_deal.group.id)
+            else:
+                deals = [basic_deal]
 
+            (services, products, is_size_needed) = await self._get_products_for_deal(deals)
+            services: dict[str, ServiceBillingDocumentPdf]
+            products: dict[str, ProductBillingDocumentPdf]
+            is_size_needed: bool
             billing_request_values: List[CreateBillingRequestValue] = []
 
-            psq = defaultdict(lambda: defaultdict(lambda: 0))
-            sq = defaultdict(lambda: 0)
-
-            services_dict = {}
-            products_dict = {}
-            for deal in deals:
-                for product in deal.products:
-                    product: DealProduct
-                    for service in product.services:
-                        service: DealProductService
-                        psq[product.product_id][service.service_id] += product.quantity
-                        products_dict[product.product_id] = product.product
-                        services_dict[service.service_id] = service
-
-            for deal in deals:
-                for service in deal.services:
-                    service: models.DealService
-                    services_dict[service.service_id] = service
-                    sq[service.service_id] += service.quantity
-
-            for product_id, services_ids in psq.items():
-                product: models.Product = products_dict[product_id]
-                for service_id in services_ids:
-                    service = services_dict[service_id]
-                    quantity = psq[product_id][service_id]
-                    billing_request_values.append(
-                        CreateBillingRequestValue(
-                            name=f'[{product.name}] - {service.service.name}',
-                            price=service.price,
-                            amount=quantity
-                        )
-                    )
-            for service_id, quantity in sq.items():
-                service = services_dict[service_id]
+            for product in products.values():
                 billing_request_values.append(
                     CreateBillingRequestValue(
-                        name=f'{service.service.name}',
-                        price=service.price,
-                        amount=quantity
+                        name=f'{product.article} {product.size}',
+                        price=product.price,
+                        quantity=product.quantity
                     )
                 )
+            for service in services.values():
+                billing_request_values.append(
+                    CreateBillingRequestValue(
+                        name=service.name,
+                        price=service.price,
+                        quantity=service.quantity
+                    )
+                )
+
             deal = basic_deal
             create_bill_request = CreateBillRequestSchema(
                 listener_transaction_id=deal.id,