how much is the airport shuttle bus tickets for adult n child in Hong Kong?

There are many airport shuttle buses at the airport. Different route have different ticket fare.
Could you tell me which line you wanna take or where your destination is?
So I can tell you the exact ticket fare.
As far as I know, chilren under three years old are free for the shuttle bus. And children from 3 to 6 years old can enjoy half-price tickets.
All of these shuttle buses have luggage compartments. Don't worry about this.