[Anonymouse]

Intriguing, if it works. Most of the expense of space travel is escaping Earth's gravity, which is why launching from the Moon would be relatively cheap if only we could. Most of the expense in any space project is the startup costs; several writers such as Clarke believed that if that could be overcome, you'd be in business (e.g. in Imperial Earth, Malcolm Makenzie - not a misspelling, a computer error he tried and failed to get corrected - had an initial scheme to mine Titan's hydrogen-rich atmosphere which was enormously expensive...but, 20 years later, enormously profitable).
So it will be, it's believed, with any real project. But this does sound interesting, especially as it's a no-fuel drive.