No wonder it's cheaper - N-trig instead of Wacom. (I'm not commenting on the technical merits of either choice, just that one tends to be cheaper than the other.)
The parallax and purported improvements in accuracy are a big deal though. Even with a >100 point calibration, the stylus on my Surface Pro gets weird tracking on the screen's edges or when the pen is held at off angles.
I was sold once Panay clicked the Stylus and popped up OneNote instantly. There's a lot of value in that for people like me who still prefer to use a pen to take notes.
Yes, N-trig's edge performance is better. But Wacom is better supported in terms of software, has more granular pressure sensitivity and the pen does not require a battery.