Could you create a premium edition of your book (assuming you are self-publishing)? Here’s a model from a traditional publisher: to coincide with the 40th anniversary of the moon landing, Taschen has issued “Moonfire,” a special edition of Norman Mailer’s “Of a Fire on the Moon.” There will be only 1,957 copies, each at $1000. For this you get high-quality photos from the NASA archives, a Plexiglas box container, and a signed, framed copy of a photo of Buzz Aldrin standing on the moon.
(There's information about writing and publishing your book--for finding a publisher--in my book, "Your Writing Coach," published by Nicholas Brealey and available from Amazon and other online and offline retailers.)