Using liquid hydrogen and liquid oxygen fuel will enable NASA to reduce costs and leverage experience and existing technology in the field, Bolden explained. While the rocket component of the SLS is expected to cost $10 billion, the entire program (which includes work on the deep space capsule and upgrades to the agency's Kennedy Space Center launch site) will be about $18 billion through the first test flight in 2017. That's about $3 billion per year, NASA officials said.
http://www.space.com/12941-nasa-unve...ch-system.html
Somehow only a portion of the article made it into the OP.