I recently picked one of these up, and I'm really impressed. Retail is around $199, and I haven't found anything else in the same range that I'd trust as much as this.
It's obviously not the same as a Meprolight or Aimpoint, but the build quality is still excellent. It also runs on a common AAA battery rather than some more obscure cell size. I like this because a lot of my other gear uses AAA cells, increasing the chance of me always having a spare. It features a well designed mount, witch includes a spacer for adjusting the mount height, it doesn't have any sort of quick release, but cowitnesses well so that's not really an issue. The small details that were engineered into this sight are quite impressive too, including a quality rubber armor housing with lens caps that comes included but is removable if you don't want to use it, the lens caps which can clip together to keep them out of the way while shooting, and the adjustment caps integrate a protrusion on them that can be used to adjust the sight rather than needing a coin or screwdriver. These features are minor, but show a level of design that I find impressive on a sight at this price range, they also serve to make the sight much more user friendly.