I own one and I like it, though I think one needs to be realistic about what it is before purchasing one.
This is a Lomo, i.e. a "toy camera". I know a lot of people were expecting something more with this camera but quite frankly that was incredibly unrealistic. You will get soft images out of the plastic lens. You will more than likely get some light leaks due to the sloppy nature of the take up spool. Focus will be hit or miss at best.
That being said, whether or not it is worth it is totally up to you. I like mine and I've run at least 30+ rolls through it in the time I've owned it. I like the fact that it is incredibly light weight which means I can stick it in a messenger bag and I hardly notice it is there.