7 are in the story and can't be missed and the rest are below;
Wise Men's Kung Fu located in the Wise Men's Quarter, Wan Chai.
Oblique Air Kick - $100
Stepping Strike - $100
Twin Palm Thrust - $200
Dragon Spin - $200
Double Storm Kick - $300
Tiger's Eye Military Surplus located on the 1st floor of the Thousand White Building in Kowloon.
Rear Foot Sweep - $200
Serpent Coil - $250
Machinegun Fist - $500
The B.C. Military Surplus also located on the first floor of the Thousand White Building in Kowloon.
Oblique Slam - $100
Diagonal Wipe - $150
You'll need a lot of money to buy all the scrolls.