I just won it with a roll of 7 in LDoN's Sepulcher of the Damned. My lucky night. It's much better than any gear I have, or can afford. With 12 str, 8 Dex, and 8 MR, it will be a while before I replace it.
I sold one two days ago on Xev for 7K... I don't think I could sell one more for the same 7K, but I was lucky, apparently. I think 400 pp is way to cheap for such an item.