I got this as a gift, and the thought was much appreciated.
This unit, as I've read since getting it, is plagued with problems. The worst are the dark spots in the video. Most users see fine on part of the screen, but see dark areas, because of the angle. Their technical support suggest moving the glasses around to see the different parts of the screen!!
Also, there is no adjustment for width between eyes. That mean, unless your eyes are seperated by exactly the distance they designed the unit for, you will have eye strain and/or see double images. (like looking at something cross-eyed.) In my reading, it seems many-to-most folks have this issue. Technical support suggests there is nothing that can be done about this issue.
I would not buy this item, not at any price. If they could fix the deficiencies, it would be a great item.