If you catch any Harry Potter news this weekend, you may not catch this detail: Abebooks.com sold “an unread first edition, first issue from the 500 original copies published before anyone knew JK Rowling’s name” for $37,000. That’s the most expensive Harry Potter book they have sold.

Today, a similar book can be purchased for a mere $68785.62. The London-based seller of this edition describes it, saying, “This copy inscribed to the lady who ran the Edinburgh restaurant (Nicolson’s on Clarke Street) where J.K.Rowling wrote the majority of ‘Harry Potter and The Philosopher’s Stone’ ;nursing a single cup of coffee and rocking her daughter to sleep with one hand, writing Harry’s adventures with the other: ‘For Grainne, With best wishes. J.K.Rowling.'”

Rowling is using this latest book buzz to promote awareness of missing and exploited children by having posters of Madeleine McCann, a girl who has been missing for two months, distributed to booksellers for display with Harry Potter and the Deathly Hallows.