The very day you pick up your pre-order, expect to see 100 copies sitting on a shelf. ... pre-ordering movies .. hehehe .. limited supply .. hehehehehe
@Vineri: That mentality might cause a sequel to not happen. Everyone expects a lot giving barely anything -- if at all. @Krommm: There might or not be 100 copies sitting on a shelf. At this point might or might not isn't factual. The Blu-Ray Pre-order, however, gives you a guaranteed 51% discount off the regular price. That's a fact. =)
Of course, there is also the digital stream option which is half the cost of the Blu-Ray.