I also bought the DVD directly from the Under Our Skin website. I have watched it several times here at home. It's currently out on loan to my gynecologist, and I've asked him to forward to any other physicians who may be interested in viewing it. I told him I was in no hurry to get it back, so hopefully it will make it through the medical staff at the local hospital--we'll see.
I'm not sure, but since the movie is being released in theaters, I seem to remember reading that it was no longer going to be sold on the website after the first or second week of June.