WASHINGTON — NASA has increased the prices it will charge for future private astronaut missions to the International Space Station, saying the new prices reflect the true costs of supporting those missions.

A revised price list, posted April 29, updates the prices NASA charges to private missions flying to the ISS for cargo, station resources, crew time and other services.

The new pricing policy charges $5.2 million per person for ISS crew time to support a private astronaut mission, and $4.8 million per mission for integration and basic services, such as mission planning.

“Due to the complexity of private astronaut missions and differing mission concepts, reimbursable values for these missions may vary,” the agency said, noting that detailed pricing “will be negotiated at time of mission award and contract or agreement finalization.”.