I would say you have 80% chances it is a reprint. I don't think it's a wilding poster, for the simple reason that I have never seen this poster on a construction site, and I live in Los Angeles, the capital of advertising. I more worried about the fact that the poster is single sided. This poster was printed in much smaller quantities that the other styles, and I've never seen a SS version for sale before. Since Inception was a gigantic hit, I'm sure this poster has been reprinted, and like Archie said, this scumbag seller has access to crap like that.
Now regarding Roger Rabbit, did you buy that blue poster I told you about?
T