Not expensive and the guide was very informative with a sweet personality. I love watching shows and movies now and think, 'oh yeah... I remember her talking about this.' Not only about movies but Central Park history as well.
The guide was very pleasant and this was a good way to see Central Park. The tour lasted about 2 hours, and included visits to many well known film locations. I felt there could have been more background information rather than "this is where Carrie fell out of the boat" type commentary. And no mention of "Elf"!
So, it was ok, worth doing, but no East Village Rock'n'Roll Walking Tour!
The tour was really good - guide was very informative and even showed us stills from movies of where we were. Definitely the best way to see central park if you're a bit pushed for time.