I don't doubt for a moment that these are the "real deal" except that I think these are being distributed from another source. I would imagine that these are a certain number provided by the manufacturer legitimately to True Utility and some overflow is manufactured and distributed through other means like eBay. Chances are, once True Utility takes delivery of them, they then add the sheaths from another supplier and package them up and price them up accordingly.
This is the difficulty in contracting development from an outside company, especially one in Asia.
Def