Who leaves a $1000+ board out in the fucking rain? Who leaves it outside at all for that matter? I can see a year old Custom sitting outside in the rain, but not a Vapor. The binding marks are obvious. Are there lines running tip to tail on the base? Usually unused boards would have non of these lines. How do the edges feel? If you can feel even the slightest snag as you run your finger around the edge, it has likely been used.
Also: get a refund and buy a different board.