We noted yesterday that WWE's "The Undertaker: The Streak 21-1" DVD will come as a limited edition coffin box set with only 666 copies made for fans in the United States and 2101 copies made for fans in Europe. WrestlingDVDNetwork.com notes that pre-orders for the 666 US DVDs went up yesterday and by the evening they were already marked "currently unavailable" on Amazon. The DVD is still listed as unavailable as of this writing so it appears WWE sold all 666 units on the first day of taking pre-orders.