Amongst SF/F art book collectors, the Blade Runner sketchbook is notoriously expensive and hard to find. People pay hundreds of dollars for a copy, and no one ever seems to give them up once they've got one.
Chances are, you'll never get to see it... if it weren't for the brilliant, friggin' internet.
Someone uploaded great scans of the entire book, which is full of Syd Mead's concept sketches for the film.
For more Syd Mead, check out this collection here:
(Be sure to zoom in!)