Unless a higher value is declared and an additional charge paid for carrier's insurance. Distribution By Air's liability for any shipment or part of a shipment lost or damaged by any cause, shall not exceed a) actual value, b) $.50 per pound lost or damaged, whichever is higher. You may declare a higher value for insurance by typing the value in the proper box and by paying the additional charge applicable to such insurance, subject also to the limits of liability of the carrier and the rules in our current tariff or service guide, which is available on request.