In 2011, CBS released the DVD of season 11 of the old Hawaii Five-0 series with Jack Lord. In 2012 it was released again. I have noticed the 2012 release is cheaper (by a little) than the 2011 release, but I can't find any documentation online about any differences. Also, this is the only season of 12 to have two separate releases. Can someone tell me why the two releases and what the differences are, if any?