I received this week my Tobii EyeX eye tracker. The packaging is nice and there is a magnetic mount to fix it to the screen.
I am trying to develop the interface with the Gazespeaker using the EyeX SDK for Unity (also applicable for C#).
It was more complicated than anticipated (compared to the Eye Tribe eye tracker), but now it is finally working after several hours of development and testing.
When it is stable enough, I will publish the version on this website for download.