From Transwa Bay East Perth bus to Transwa Bay Mt Barker. 5 h 26 min $52. From Perth drive to Mount Barker. 4 h 14 min $49. From St Georges Tce Stand A C D line 40 bus to Perth airport, fly to Albany airport, taxi to Albany Hwy To Redmond T/O, then bus to Mount Barker. 4 h 13 min $264.