ferry from Shenzhen Shekou (or Fuyong) to Hong Kong Macau

From shekou to HK: Each passenger is allowed to take a less than 10 kg luggage for free. If you have two more, each takes you CNY20/10kg; the other takes you CNY40/10kg.
From shekou to Macau: Each passenger is allowed to take a less than 10 kg luggage for free. You could only check two more at CNY30/10kg.
From fuyong to Hongkong: Each is allowed to take three luggages, and one less than 20 kg is for free, the other two takes 20 HKD/5 kg.
From fuyong to Macau: Each is allowed to take a less than 20 kg luggage for free. The other luggage less than 20 kg costs CNY25, if it’s between 20 and 40 kg, taking CNY30/5 kg, if it’s more than 40 kg, you need to tell in advance, and the price will be told after.

Thanks, very helpful! Another question...how and wher can I buy tickets? I just end up on a full chinese site...

Well, at Shekou, you could go to the first floor of the building, and the ticket counters and two ticket machines are provided.
At Fuyong, you can also choose buy the tickets from either the tickets counters or the machines on the ticket hall.
It’s easy to buy tickets in both ports.