Hi, my name is*****'m a certified appraiser, and I'd be happy to help.
Do you mean Goblet of Fire? Or a different book?
Can you get me a photo of the title page?
OK, can you get me the date of publication (from the title page) and any edition/printing information (from the title page)? This shouldn't be the original date of publication, there will be a date when your particular edition was printed.