Macau to Zhuhai:
Take Taxi or city bus to the Barrer Gate of Gongbei Border. For I don't know where are you going to stay at Macau, I can not tell the cost. Passing the border, you are in Zhuhai. You can take buses or taxi to wherever you want in the city. If you want to go Shenzhen from there, get to Gongbei Bus Station opposite the custom in Zhuhai side. It has buses to Shenzhen every 15 minutes and get there 3 hours later.