Mrs . Miller , you are an old friend of ours . In order to encourage future business and as a gesture of friendship , we are prepared to cut our price by 5 % . Will that satisfy you ?   That's great . Thank you for making this concession . I accept .   Now I repeat , 5,000 transistor sets , specifications as shown in our catalogue at $ 20 each C . I . F . Los Angeles .   Good . Now that the price is decided on , we can discuss the packaging .   As to packaging , we'll pack them two dozens to one carton , gross weight about 25 kilos a carton .   Carton ?   Yes , corrugated cardboard boxes .   Could you use wooden cases instead ?   Why use wooden cases ?   I'm afraid the cardboard boxes are not strong enough for ocean transportation .   Cartons are comparatively light , and there fore easy to handle . They'll not be stowed away with the heavy cargo . Besides , we'll reinforce the cartons with metal straps . 