“At a time when publishers are scrambling to keep customers willing to pay $26 for a hardcover book instead of $9.99 for an electronic version, the publisher of Senator Edward M. Kennedy’s forthcoming memoir is going in the opposite direction – issuing a limited edition it plans to sell for $1,000 a copy. Twelve, an imprint of Grand Central Publishing, is planning to issue 1,000 copies of a leather-bound, electronically signed edition” of the ailing senator’s book.