How much is train from Penn Station to Newark Airport?

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Tags

1. #ticketing
2. #system
3. #airtrain
4. #amtrak
5. #offices
6. #included
7. #stations
8. #costs
9. #train
10. #enter
11. #newark
12. #machines
13. #transit
14. #station
15. #ticket
16. #purchase
17. #airport
18. #their