Some comments related to auction listings of the polymer $100s:
1. A majority of the sellers do not identify prefixes or show back side of notes.
2. Many sellers do not properly describe grade - NEW and 'fresh from pack' do not mean UNC.
3. Many prices are too high for currently available banknotes. (US$140 - $160)
4. Many listings have a 'returns not accepted' provision.
Of three polymer $100s I have received, one, described as NEW, had a 2" sharp diagonal crease on the left edge (no external damage to envelope), and another, identified as prefix EKE by seller to a direct inquiry, was received as EKB.
It appears many sellers with little or no knowledge of currency are trying to make quick bucks off the current 'polymer release hype'. I also expect that later releases of newer prefixes will get little exposure on the auction sites (similar to later Jenkins-Dodge and Jenkins-Carney $100s).
blumax