That's a valid comparison and an interesting point. If the premise of their "film" was about something interesting or valuable I might lean towards thinking that the cost could be worth it. However the only premise I can see is a showcasing of web 2.0 documentation as a medium.

I don't see why a month of constant, needless flying is needed to for this premise. Documenting a bicycle trip using web 2.0 techniques, for example, would be a similar project without the subtext of needless consumption.