How much a rocket cost?

What a rocket costs to build and what a customer pays for it are different numbers. Commercial launchers publish list prices that cover the vehicle, the launch campaign and a margin; the actual manufacturing cost is a trade secret. SpaceX has said that reuse makes a Falcon 9 mission far cheaper than its roughly 70 million dollar list price, because only the upper stage and, when not recovered, the fairing halves are built new each time. Government programmes report the opposite: the Space Launch System, at more than 2 billion dollars a rocket according to NASA's inspector general, costs more to produce than any commercial price because it is built in small numbers with a large standing workforce.

Engines are the single most expensive component. A large staged-combustion or gas-generator engine involves turbopumps spinning at tens of thousands of revolutions per minute, precision-cast chambers and exotic alloys, and a heavy launcher may need nine, twenty-seven or thirty-three of them. Tanks and structures follow, then avionics, flight termination systems and the upper stage, whose engine must relight in vacuum. Small launchers spend proportionally more on fixed items such as software and range support, which is why a rocket carrying 300 kg still costs several million dollars.

Before the first unit is sold, a company or agency spends hundreds of millions to tens of billions of dollars on design, test stands, failures and qualification flights. NASA's Saturn V programme cost roughly 6.4 billion dollars in 1960s money, and SpaceX has described Starship's development as a multi-billion-dollar effort. Those sums are recovered over the life of the programme, so the fewer vehicles built, the larger the share of development each one carries.