at first, spacex wanted to follow the falcon 1 with a larger capacity vehicle, the falcon 5. in 2005, spacex said it was working on the falcon 9 instead. they said that they already had a government customer. the falcon 9 was said to be able of carrying approximately to low earth orbit. they said it would cost us$27 million per flight with a payload. it would cost us$35 million with a payload. spacex also said a heavy version of the falcon 9 would have a payload capacity of about . the falcon 9 was intended to enable launches to low-earth orbit (leo), geosynchronous transfer orbit (gto), as well as both crew and cargo vehicles to the international space station (iss). the rocket was not full reusable at this time. this caused the price estimates to be higher than expected.