Do you mean, if they would place an order for +1 unit today, what would they be invoiced for that specific unit? This question is quite irrelevant, because they don't order them one by one.

Or, what is the total cost of the project, averaged out onto each unit that has currently been ordered and delivered? Or just ordered? Or planned to be ordered? Each question has a vastly different answer.

Or, what is the projected final average cost per unit, once the device has been deprecated in favor of the next generation?

These projects always consist of the price of the hardware (which changes), the developmental costs, the internal costs of the staffers in the army (air force? pentagon?) working on the project, maintenance of the device, training for the device, repairs of broken devices, and so forth.

There are follow up orders, numbers are less firm on that one.