I wrote Park Circus over the weekend (in the US, the UK and France) asking about the poster's availability to collectors, aside from copies sent to theaters that had booked the film.
I got replies from the marketing departments and was told that the poster will Not be available for purchase to the public, due to an agreement with the studio. These are, in part, what I received, via email, from 2 different Park Circus marketing execs :
"I'm afraid we can't sell the marketing material we create - the agreement we have with the studios mean we can only supply to cinemas to promote screenings."
"I am afraid these posters are not for purchase and are only available for cinemas/festivals that programme the film and have licensed a screening from Park Circus."
So unless some copies slip thru the cracks, it could be tough to snag one.