the quickest way to reach suzhou from pudong airport? how and what is the cost? thanks

The fastest way is to take shuttle bus line 5 to SH Railway Stationw within around an hour. There take a bullet train to Suzhou in half an hour.

The easiest way should be the direct intercity bus. They are frequently scheduled at the airport from 10:00 to 19:50. It takes around 3h and the bus fare is CNY84 per person.