My opinion hasn't really changed.
I still think Knots (and this one in particular) would be best authenticated by a paid service, and there are still things I don't like about the Knot in the listing you provided.
My personal opinion is that it isn't authentic, but I welcome everyone else's input if they would like to take a look.
*maybe I'm just being too picky (but I doubt it).
I concur with V0N1B2, I would not buy this.