If you are looking for cheap face tracking you could try Brekel Pro Face, it uses a depth sensor camera like Faceshift did. So for those of you who still have your Kinect camera you can try it out, if it works for you it is only $79.
Faceware at full retail is about the same as doing a full neuron setup and the plugin so it isn't super crazy though definitely not hobbyist or toying around pricing. They are actually pretty cheap compared to a lot of their competition and is a very solid markerless system that can use just about any video source. Considering the current characters include the default Faceware blendshape set, plus a bunch more the time savings of having a push button solution might make up for any price difference.
Intel Realsense cameras include face tracking and you can tie into the SDK to roll your own.
There is a lot more going on to face tracking though than just feature tracking. They usually tie into a FACS or FACS type database and use machine learning algorithms for matching to the correct FACS pose (blendshape selection and strength of selection) then a retargeting system to apply that to your character. It is actually quite a bit more complicated than body tracking.
It is a real shame Faceshift is gone, it was pretty reasonable and worked great. Once Apple snatched it up it was impossible to get ahold of. Hao Li's new research looks promising though.
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