(a) Pricing basis. To the extent practical, optional services will be provided on a fixed-price or fixed-rate basis. If this is not practical, the price will be on a governmental cost basis; i.e., the actual cost or in certain cases the estimated actual costs.
(b) Escalation of payments. All payments for optional services subject to escalation will be escalated in accordance with the provisions of Sec. 1214.103(d).
(c) Schedules of payments. NASA will establish payment schedules for optional services and will incorporate those schedules in the launch agreement at the time a particular optional service is agreed to between the customer and NASA.
(d) Late payment fees. Customers who do not make payments by the due dates defined by NASA will be subject to a late payment fee established by NASA in the launch agreement.