"NASA has signed a $753 million modification to the current International Space Station contract with the Russian Federal Space Agency for crew transportation, rescue and related services from 2014 through June 2016. The firm-fixed price modification covers comprehensive Soyuz support, including all necessary training and preparation for launch, flight operations, landing and crew rescue of long-duration missions for 12 individual space station crew members."
Keith's note: $753 million/12 astronauts = $62.75 million/astronaut.
No NASA Discount For Soyuz Seats, 2010, earlier post
"NASA has signed a deal worth 306 million dollars (224 million euros) with Roskomos for six rides to the ISS in 2012 and 2013, or a charge of 51 million dollars per US astronaut."
NASA Extends Contract with Russian Federal Space Agency, 2008, earlier post
"NASA has signed a $141 million modification to the current International Space Station contract with the Russian Federal Space Agency for crew transportation services planned through the spring of 2012."