The only thing that makes sense to me is that the card manufacturers are repurposing production yield fallout, cosmetically defective or repaired cards. To incentivize this card, it would have to sell for $100 or mine at like at 60 Mh/s @ 50 watts.
Exactly the same I thought, this cards look like they are dumping refurbished cards with artifacts or other video errors. But as pointed the price makes no sense as it has almost no resale value outside of the mining market.
Here is the "ZOTAC P106-100 Product Introduction Sheet 0.1":
http://imgur.com/a/xtxWYI received the same brochure from two independent hardware suppliers.