[untenured]

Nearly the same money plus inflation, but a completely re-oriented set of goals.

Can they get to Mars on that?

More to the point, can they get to Mars on half that?

[RightWhale]

I don't believe they intend to go to Mars with intent to land any time in the next 20 years. They will probably make a 2-year long excursion to include a fly-by of Mars, one of a series of long-duration deep flights. Deep by today's standards.