I've got a bunch of guide books that I've collected over the years.  They range from worthless to rare, not sure I know the difference. Send me offers but I'd say $20 a book is about right.  All used, have ticks and notes included (my handwriting sucks so likely unreadable).

CA:

Sonora Pass, Riverside Quarry (2 versions), SoCal (The Guide and SoCal sport climbing), Pinnacles 2nd edition.

AZ:

Phoenix Rock, Queen Creek, Castles in the Sand (Sedona) 

CO:

RMNP, South Platte, Best of Boulder, Shelf (old version)

Utah:

Desert Rock I,II,III, Selected climbs of SW

Misc:

Montana, Smith, Vedauwoo