I was in Disney the week before the movie came out, and they were handing out awesome.....HUGE!...... posters....that were a really nice quality....for free! it was in the pirates store where you exit the ride. also right by the ride exit there was an advertisement for the ride. the posert fold up, and when you unfold it there is a large picture of the 4 main characters!
but i know that when i was there they were giving away posters for free, but i don't know if they are selling stuff now or not! they would silly not to do something because the movie was such a sucess!
hope that helps!