Details on Merlin US DVDs
It looks like I was wrong. The Merlin US DVDs will be distributed by BBC/Warner, not Fremantle Media/Universal. According to this article, it will have almost exactly the same extra as the UK version (video diaries, Behind the Magic, commentaries etc.). So for US Merlin fans who haven't bought the DVDs, you'll get the best deal. I have a quick check, WBShops sells it for 31.96.