First of all, I love Harry Potter.
Second of all, can I borrow four million dollars??
If you've read book 7, you know what the Tales of Beedle the Bard are. JK Rowling handwrote seven copies of the book, gave six to her friends, and sold one for charity. Want to guess how much it sold for?? 4 MILLION DOLLARS.
Seriously though, if I had that much money, I'd totally buy a hand written, jewel encrusted book of stories essential to the childhood of Ronald Weasley.