1. CNY6 per person
2. CNY32-35
3. Fuqiao is within the downtown area of Quanzhou, just take city bus. It costs no more than CNY5.
There is no bus go directly to Fuqiao from Xiamen Airport.
By the way, you can take the Airport Shuttle bus of Xiamen Airport to Songbai Long Distance Bus Station, where you can take long distance bus to Quanzhou.

Now there is high-speed railway available from Xiamen to Quanzhou.
It takes about 40mins, CNY32 for second class and CNY38 for first class seat.
You can buy the ticket in Xiamen train station before your departure, for it is starting station,easy to buy a ticket.