expenditure, excluding commissions payable to the exporter's agent in the buying country, for the supply from the buyer's country of goods and services, that are necessary either for executing the exporter's contract or for completing the project of which the exporter's contract forms part
... "local portion" shall mean that portion of the contract price representing the expenditure the exporter expects to incur on the spot in the way of payments to employees and others and payments for goods and materials ...
