Someone already said it best here...
This was less of a movie and more of a collection of random images, videos and voiceovers related to a high priced hooker.
The pedantic, boring conversations about the economy, the useless subplot about the boyfriend going to Vegas, the Vulcan-like emotionlessness of Grey and pretty much everyone in the film.
I'm sorry. I dig subtlety but this was a weak, incomplete case study. Who was this girl? Where did she come from? What motivates her? What turns her off?
Nothing is answered. We just get commercials for every trendy eatery and boutique in lower Manhattan.
"My religion is very simple. My religion is kindness." - The Dalai Lama