You are a pilot are you not?
Then it is advisable to have all the tools and information available to you when it is required. I have to admit the price i paid for CAR CARS CAO and AIP was into the high $500's from memory, with a 12 month subscription service so it does hurt, but it is advisable to have them.
And if you remember everything contained in those books then you have a much better memory than myself!!