"Buy Buy, Baby" is a Friday feature that explores unique luxury goods and what makes them special. Check back every week for more items to put on your wish list.To say the life of Senator Edward Kennedy would make one hell of a book would be an understatement. To say that book would be worth $1,000, however, may require suspension of disbelief. Yet Kennedy's publishing imprint, Twelve, has opted to print 1,000 leather-bound, electronically signed copies of True Compass and sell them for that price on the Hatchette Book Group's Web site. Twelve's parent company, Grand Central Publishing, is offering this edition even though a $35 version will be available on Oct. 6.