I completed this today. It's very, very short. I finished it in about an hour. Which, for a boxed game, is not at all what one would expect. Basically, I felt I was playing a fairly long introduction, and just as things started getting interesting it cut to the credits.
Having said that, it was generally quite enjoyable, with very good graphics and pretty varied situations. The camera was a bit of a pain at times, but no big deal. So I had fun playing it. It was never very challenging, though (again, it felt like the early parts of a normal game).
So... it's really just the size of the game that's a problem, considering the pricetag. If they offer it online at a reduced price, I think people should give it a try.