I have uploaded a reply in your older thread for the same question (, which you built before user registration).
http://www.japan-guide.com/forum/quereadisplay.html?0+153349Here I make a copy of that reply.
Re: Tokyo Shuttle & Tokyo Subway package (2017/1/26 14:34)
myself, my wife, 12+ years old daughter, 5 years old son, and 4 years old daughter we decide to buy Tokyo Shuttle (one-way) + Tokyo Subway 24-hour Ticket.
Hmm…, that does not sound to be a good deal; the package for an adult passenger gives you no or only at most 100-yen discount, and there seems to be no child package.
When in the day is your flight scheduled?
Which terminal of NRT will it use?
Where is your first destination?
There may be a better (combination of) transportation mode(s) for you….
[Tokyo Shuttle]
Adult fare
: 1000 yen when you buy a same-day ticket.
: 900 yen when you make advance reservation.
: 950 yen when you use an IC transportation card for the ride.
Child fare
: 500 yen when you buy a same-day ticket.
: 500 yen when you make advance reservation.
: 480 yen when you use an IC transportation card for your ride.
[Tokyo Subway 24-hour Ticket]
Adult ticket: 800 yen.
Child ticket: 400 yen.
http://www.tokyometro.jp/en/ticket/value/travel/index.html#anc02[Tokyo Shuttle (one-way) ticket & Tokyo Subway 24-hour Ticket]
Adult package: 1700 yen.