lol. BR disk has almost the exact same manufacturing process. A blank disk is far more complicated than a factory pressed disk, and more expensive to make, and I can buy a 100 pack of DVDs for under $30 easy. I've seen them as cheap as $).10 a disk. There's no complex technology in one vs the other, but BR blanks are $30 each, and DVD are a fraction of a dollar. The tech is in the DRIVE (aka the lasing system), but the disk is just some layering of some materials, nothing ridiculously special.
Its the licensing that you pay for, not the thing itself. Maybe MS puts $25-30 of parts in it, but assuming they say 1 million units (generous given sales thus far), they put what, $250m in development into it? They'll be loosing money if they don;t move 3m units by end 2011.
Back to disk media, I can understand why a movie costs (licensing of content), but I don't understand why a blank costs more than a licensed disk, or 50x the price of a very, very similar technology.