What's the cost of transportation if we travel by Maglev and then by Metro from Shanghai airport?

We are 6 adults and 1 child (5 years old). I understand that the Shanghai Public Transportation Card is the best option, but what about the little kid?
On arrival at Pudong International Airport we will need to go to Jing'an Temple Metro Station where we shall reside. Firstly what will it cost us if we travel by Maglev and then by Metro(Line 2)?
Secondly what will it cost us if we use only Metro Line 2?
Thanks beforehand for your reply.