It seems that after doing some research on the subject of going back to the moon, NASA isn't the only one interested. I found a few resources for reference.

Ref: http://www.transorbital.net/media.html

Ref: http://www.space.com/businesstechnol...al_030715.html

The funny thing about this link is that it says:

A test mission was launched into Earth orbit in December 2002 to check out TrailBlazer's launch vehicle, a Dnepr rocket, and the spacecraft separation process.

"That launch performed flawlessly," said Laurie. "Our second step is to go to the Moon." TrailBlazer's launch is set for early 2004.

WHY DIDN'T WE HEAR ANYTHING ABOUT THIS?

Ref: http://www.lpi.usra.edu/expmoon/future/future.html

So it seems there is great interest in going back to the moon, not only for science, but commercial use as well.

Hope this helps explain away why cost isn't an issue.