Quote from anacott_steel:
Open book is roughly $50 for me if that helps. To be honest, Open book isnt going to make you anymore money than what you are making now. Its like driving with a radar detector, is it going to make you drive faster? once you are hit with a laser, its over....
open book helps on some stocks- on others the specialists are pricks and hide/pull quickly big size to stir up order flow and then trade off it- you have to take size on the book with a grain of salt...