For the time being, the paperback version of Geza Vermes' The Story of the Scrolls is only $1.58 on Amazon. Just before the book was published, Vermes gave a lecture with the same title at the Louisiana State University's Hill Memorial Library. A video of the the lecture is available on YouTube and has been embedded below.
Professor Vermes passed away on May 8, 2013. You can read several tributes to his life and work at The Marginalia Review of Books.