this sounds like rip off - use one of those shuttles,they will take you there for no more than $120 plus toll($8).
-http://www.goairlinkshuttle.com/
-http://www.allcountyexpress.com/
-http://www.westchesterexpress.net/
arrange them upon arrivals at ground transportation(Welcome Center) desk.
this sounds like rip off -