I would actually consider that not a bad deal. The skis would go for about $350 while the bindings would go for 300. Look Pivots are expensive and top-of-the-line. My brother definitely paid a premium for his FKS's. As for the differences between 2012 and 2013 models, I think it's a matter of construction, and possibly rocker I think. Don't quote me on that, I can't specifically remember. Dimension wise, I think they're pretty much the same.
Maybe someone else knows the differences between the year models.