from hangzhou or suzhou to wuzhen

In the Central Bus Station, there are direct buses to Wuzhen, and the fare is CNY30, and the duration is about 1.5 hours.
From Suzhou South Bus Station, there are also buses available, and the bus fare is CNY34, and the travel time is also about 1.5 hours.

See, the bus fare and the travel time is also the same from these two cities. So You can just choose one that is near your location, which saves the transfer time.