What is the most money you have paid for a book?

Question

What is the most money you have paid for a book?
What is the most money you have willingly paid for a book? Preferably not a college textbook.

Answer

I bought an original Shakes spear leather bound book that he actually wrote its not printed at all from an old museum that was closing down and they were selling various thing to the highest bidders because the museum lost is state funding and had a bunch of bills I guess they had to pay off any way I got the book and the glass humidor to keep it from falling apart for ,. but its beautiful so it was worth it!