What happens to Falcon 9 second stage after deployment?

It was actually the second stage of a SpaceX Falcon 9 launched in March 2017 with the EchoStar23 mission. It has completely disintegrated in the atmosphere,” says the handle (translated).

How much does it cost to launch Falcon 9?

SpaceX offers even more competitive pricing for rides aboard its medium-lift Falcon 9 rocket. The company typically charges around $62 million per launch, or around $1,200 per pound of payload to reach low-Earth orbit.