Seat costing and toilet facilites

Hi,
1)How much does it cost for the middle and upper hard sleeper seats on the T109 Beijing to Shanghai?
2)Since the hard sleeper seats have the squat toilets, can we move between carriages to use the western toilet seats in the soft sleeper seats?
3)Do the stations have western toilet facilities? Is there enough time to use these facilities while the train is at the station?
Many thanks,