Eric Williams called me this afternoon to say he picked up the strategy guide. So I called like 3 or 4 different Gamestops (oh I how hate that store) until I found one. $30 for the limited edition version which includes the art book. Brady Games did a great job with both the art book and the strategy guide itself.
Of course the strategy guide has hella spoilers so pick up at your own risk. But everyone should really pick it up for the art book alone. The amount and quality of concept art that goes into making a God of War still amazes me.