I found these generally positive comments on tripadvisor:

http://www.tripadvisor.com/ShowTopic..._New_York.html

I'm also surprised nobody has matched them.

I have some cheapo European travel booked for later this year from JFK and I hope the price stays at $12. It's really the worst part of flying out of JFK for me -- I'm too far to take a taxi or car service, and airport parking rates there had gotten crazy. I had been renting cars one-way to and from JFK, but the rates outbound from JFK have also skyrocketed, making that no longer a viable option.