I was looking for a stylus to enable note taking (including simple line drawings) on an Android tablet.
Firstly the cost: it's expensive when stacked up against the range of "crayons" out there with cheap floppy nibs and poorly made bodies. But this is a well manufactured piece of kit. It's much more similar to a mid range roller ball than anything else, with a small and firm nib that gives precise feel and response. It is heavier than cheaper styli I've used in the past which again, feels more like a pen than a pencil.
Secondly compatibility: it's branded as the C-Pen, which I mistakenly assumed stood for "capacitive" and so would work with any Samsung capacitive touch screen - it does not. I bought this (despite it being listed as "for Galaxy S3") for use with a Galaxy Tab 3, and it doesn't work at all. I don't mean innaccurate or not responsive, but it actually doesn't register at all. Curious, I turned to my wifes Galaxy S3 on which it works as advertised. I'm not sure on the physics being this, but I was slightly dissappointed.
It's left me looking towards the Adonit Jot Pro Fine Point Stylus
, but these seem squarely aimed at iPad use rather than Android.