diff --git a/README.md b/README.md
index 0401961..43b49bb 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,32 @@
-# track-company
+# Truck-Company
 
 # В ПРОЦЕССЕ РАЗРАБОТКИ
 
 # Задание
 [Задание](Task15.md)
 
+
+## Файл .env
+
+- `POSTGRES_USER`=
+- `POSTGRES_PASSWORD`=
+- `POSTGRES_DB`=
+
+- `DB_HOST`=postgres
+- `DB_PORT`=5432
+- `DB_SSLMODE`=disable
+
+## Запуск
+
+`podman-compose build && podman-compose up`
+
+
+
 ## Рабочие Endpoints: 
 
 - `/routes` - Получить список маршрутов;
 - `/routes/{route_id}/transport` - Список транспорта, занятого на данном маршруте;
+- `/shipment/{cargo_id}/cost` - Рассчет стоимости услуг, оказанных по перевозке данного груза с учётом скидки постоянного клиента ;
 ## Схема БД
 ![Схема БД](docs/Diagram.png)
 
diff --git a/internal/handlers/handlers.go b/internal/handlers/handlers.go
index 40b2b62..8ba234d 100644
--- a/internal/handlers/handlers.go
+++ b/internal/handlers/handlers.go
@@ -23,8 +23,8 @@ func (h *TruckCompanyHandler) RegisterRoutes(r *mux.Router) {
 
 	r.HandleFunc("/routes", h.GetRoutes).Methods("GET")
 	r.HandleFunc("/routes/{route_id}/transport", h.GetTransportByRoute).Methods("GET")
+	r.HandleFunc("/shipment/{cargo_id}/cost", h.GetShipmentCost).Methods("GET")
 	// r.HandleFunc("/routes/{route_id}/transport-types", h.GetTransportTypesByRoute).Methods("GET")
-	// r.HandleFunc("/shipments/cost", h.GetShipmentCost).Methods("GET")
 	// r.HandleFunc("/routes/{route_id}/cargo-turnover", h.GetCargoTurnoverByRoute).Methods("GET")
 
 	//404 для всех остальных
@@ -64,3 +64,29 @@ func (h *TruckCompanyHandler) GetTransportByRoute(w http.ResponseWriter, r *http
 	w.WriteHeader(http.StatusOK)
 	json.NewEncoder(w).Encode(transport)
 }
+func (h *TruckCompanyHandler) GetShipmentCost(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	cargo_id, err := strconv.ParseInt(vars["cargo_id"], 10, 64)
+
+	if err != nil {
+		sendErrorResponse(w, http.StatusBadRequest, "Invalid cargo ID", err.Error())
+		return
+	}
+
+	final_cost, err := h.uc.GetCargoCost(cargo_id)
+	if err != nil {
+
+		sendErrorResponse(w, http.StatusInternalServerError, "", err.Error())
+
+		return
+	}
+
+	response := struct {
+		CargoCost float64 `json:"cargo_cost_count"`
+	}{
+		CargoCost: final_cost,
+	}
+
+	w.WriteHeader(http.StatusOK)
+	json.NewEncoder(w).Encode(response)
+}
diff --git a/internal/repository/interface.go b/internal/repository/interface.go
index 1ba2a3b..1a78d01 100644
--- a/internal/repository/interface.go
+++ b/internal/repository/interface.go
@@ -8,4 +8,5 @@ type RepositoryInterface interface {
 	GetAllRoutes() ([]domain.Route, error)
 	GetTransportByRoute(routeID int64) ([]domain.Transport, error)
 	GetShipmentCosts() ([]domain.Shipment, error)
+	GetCargoCost(cargoID int64) (float64, error)
 }
diff --git a/internal/repository/postgres.go b/internal/repository/postgres.go
index aeb5d5f..d3e55c2 100644
--- a/internal/repository/postgres.go
+++ b/internal/repository/postgres.go
@@ -3,6 +3,7 @@ package repository
 import (
 	"database/sql"
 	"errors"
+	"log"
 	domain "truck-company/internal/domain"
 )
 
@@ -38,8 +39,12 @@ func (r *AppRepo) GetAllRoutes() ([]domain.Route, error) {
 	return routes, nil
 }
 
-func (t *AppRepo) GetTransportByRoute(routeID int64) ([]domain.Transport, error) {
-	rows, err := t.db.Query(`
+func (r *AppRepo) GetTransportByRoute(routeID int64) ([]domain.Transport, error) {
+	if r.db == nil {
+		return nil, errors.New("Ошибка подключения к бд. *db == nil")
+	}
+
+	rows, err := r.db.Query(`
 		SELECT t.id, t.model, t.capacity, tt.name
 		FROM transport t
 		JOIN shipment s ON t.id = s.transport_id
@@ -60,3 +65,32 @@ func (t *AppRepo) GetTransportByRoute(routeID int64) ([]domain.Transport, error)
 	}
 	return transports, nil
 }
+
+func (r *AppRepo) GetCargoCost(cargoID int64) (float64, error) {
+	if r.db == nil {
+		return 0, errors.New("Ошибка подключения к бд. *db == nil")
+	}
+
+	var finalCost float64
+	query := `
+		SELECT 
+       SUM( CASE 
+           WHEN cl.is_regular THEN s.cost * 0.95  -- 5% скидка постоянным клиентам
+           ELSE s.cost 
+       END) AS final_cost
+      
+		FROM shipment s
+		JOIN client cl ON s.client_id = cl.id
+		JOIN route r ON s.route_id = r.id
+		JOIN cargo c ON s.cargo_id = c.id
+		WHERE c.id = $1
+		GROUP BY c.id;
+`
+	err := r.db.QueryRow(query, cargoID).Scan(&finalCost)
+	if err != nil {
+		log.Println("Ошибка при получении стоимости перевозки:", err)
+		return 0, err
+	}
+
+	return finalCost, nil
+}
diff --git a/internal/usecase/usecase.go b/internal/usecase/usecase.go
index 1b0e034..a0a8393 100644
--- a/internal/usecase/usecase.go
+++ b/internal/usecase/usecase.go
@@ -22,3 +22,7 @@ func (u *UseCase) GetAllRoutes() ([]domain.Route, error) {
 func (u *UseCase) GetTransportByRoute(routeID int64) ([]domain.Transport, error) {
 	return u.AppRepo.GetTransportByRoute(routeID)
 }
+
+func (u *UseCase) GetCargoCost(cargoID int64) (float64, error) {
+	return u.AppRepo.GetCargoCost(cargoID)
+}