As it turns out it doesn’t actually cost that much on regular transit, there’s an AIRPORT SURCHARGE because it’s an “airport train”.
No wonder Americans don’t use public transit, even when the system exists it’s ridiculously difficult and expensive to use.
I used to sit on the Prospect Park<->Franklin Ave S shuttle on Saturday mornings and just ride it back and forth while reading a book because it was so calming. Gliding through green backyards in the springtime.