This window mount is $40, which may not seem expensive. But really, what you are mainly paying for is a piece of round plastic with adhesive tape on it. It also includes a charging cable and power transformer, but it's really annoying that it pretty much duplicates the cable and plug that come with the original camera. The difference is that the original Circle 2 camera cord includes a swivel stand.
It would have made more sense to just make the stand detachable so you would only need the plastic mounting ring. This Logitech solution is so wasteful in both excess material and consumer expense.
in addition, the stick-on window ring is not adjustable at all. You cannot use it if the scene you want to capture is at any kind of an angle to your window. It is only good for a straight-on view.
The product says not to put the camera in direct sunlight. I have to do that, and what i've found is that, even with the window mount, the camera reflects itself back onto the camera lens. So the image has 2 large ghost-like rings.
But if you have a north-facing window and the scene is right in front of the window, then this window mount might work for you. The kit only comes with one extra set of adhestive tape.