This is a movie with a fantastic, very original premise. It avoids (considering it's main theme) the 'easy' path to the slippery slope that leads straight to the trash / slasher type of B- movie that most such productions end up being. Yet, it also falls far short of its potential.
It never manages to go 'deeper' and explore the reasons that lie behind it's premise; 'what is there left when one has and has tried everything there is to have and to try?' This is such an interesting and philosophically exhilarating topic that it could and should have been exploited. In doing this, it would have raised this film to an entirely different level. If it had spent time in the characterization of the protagonists, the motives that drive them and the omnipresent influence of our exasperated consumer society, this motion picture could have been a masterpiece. Alas, this wasn't even attempted, which leaves it stranded somewhere between a 'tame' slasher movie and a potentially great but thwarted artistic accomplishment.