Got my stylus today & have similiar comments as Willowave, except mine does fit in the N800 stylus holder (though a bit tight).
No question it's a cheap knock-off, some edges of the silver end are rough and is glued in and it's a tight fit into the holder (which requires a strong fingernail to pull out).
Overall though, for what it cost & lack of availabily of the original, it works , I'll be using both that I ordered & I'm satisfied.

Delivery took a while - but then again it did come airmail from Hong Kong. Ordered: 12/23/09, Delivered: 1/8/09

Here's a picture.