What about the Ramsey-Route 17 NJTransit Station. Parking would be at most $4.00 a day, its a secure 24 hour parking garage. Its just over 5 minutes from the NJ/NY border.
From there they could take the train directly to Hoboken and then PATH to the Village.
The train would be 9.50ow, then PATH would be what 2 bucks each?
So figure $20.00 per person + 4.00 per day.