Signed book

Mr. Korman, 

I am writing you to ask on behalf of my 12 year old daughter, who is a huge fan of your writings. She and her mother are reading through your collection. I have asked her what she wants for her birthday and she has stated “all the Gordon Korman books”. I was hoping to see if I send you a copy of your book would you be able to sign it and I can pre pay for shipping it back. This is my first kid that enjoys reading, her older brothers like video games, and I know this would make her day. 
Thanks,

David