girlfriend experience x3
soderbergh has "the girlfriend experience". related to prostitution. (2009)
then there's "girlfriend experience" by brian and mark gunn where "A man obsessed with prostitutes discovers that ||love is a lot more expensive than sex||. ...world of prostitution ..."
also related to prostitution. (2012)
and this one, featuring prostitution as well, has the tagline "Love is more expensive than sex". (2008)
very, very coincidental. or plagiarism.
this one http://www.imdb.com/title/tt1020022/
soderbergh http://www.imdb.com/title/tt1103982/
gunn http://www.imdb.com/title/tt1445024/