“ In an interview given to AviationWeek in May, Musk shared the launch costs of the Falcon 9 and their primary drivers. According to him, once a Falcon 9 first stage has been reused, the marginal cost (the cost for a subsequent launch) for the rocket drops to $15 million. This cost covers areas such as a brand new second stage (which costs roughly $10 million) and booster and fairing recovery, fuel and refurbishment costs for the rest.
The data compilation reveals that this year SpaceX reused seven full fairing sets, for cost savings that could be as high as $42 million. These savings could be lower, such as $35 million if manufacturing efficiencies have managed to bring down fairing costs to $5 million.“
Falcon 9’s first stage booster previously supported the Sentinel-6A mission. One half of Falcon 9’s fairing previously supported four Starlink missions, and the other previously supported a Starlink mission and the Transporter-1 mission.