http://www.bdsmstore.com/productcart/pc/product1247.asp
Frankly, I'm amazed that a company could not only rip-off a knock-off, but actually make it worse.

The device itself is made of pewter (!), and the hinged cuff rings are made of, well, something that's not stainless. The chrome plating might hold up for play, but any dings or scratches will cause the base metal to corrode, and the chrome will flake off. The hinged rings look like they will pinch at both the bottom and top, and the way the lock attaches is just begging for stability issues.
Again, for weekend play it might be alright, although there are certainly better options in that price range. Personally, I wouldn't wear that thing if they gave it to me for free.