Right now a book signed by Stephen Hawking be yours for only a bit over 20 grand, but expect that to go up.
And it’s not even one of Hawking’s own books, but a farewell gift for a co-worker who was leaving the Institute of Theoretical Astronomy at Cambridge University signed by the faculty, including Hawking.
“Hawking autographs are of the utmost rarity.” Indeed, though it’s already too rich for my blood, and I suspect it could easily go for 3-4 times the current price…