What is Rick Kelley's signed print Gateway to Freedom worth?

I would like to know as well, my dad has one and he loves it. His is numbered 2240/2500. From what I am seeing is a guesstimate between $100-$200 but hopefully with the movie out it will go up? But I would like to see an actual appraisal

10-28-2012: I have not noticed if the movie has caused it to go up in value - I have seen them range from 300.00 - 600.00 depending upon where it was being sold. Rick Kelley, Artist.