Okay I have a 1st edition of Harry Potter and the Sorcerer's Stone, never read kept in a closet!. Never read!. ISBN: 0-590-35340-3 Very good shape!. Here is a pic of the copyright page (well the link)
http://i166!.photobucket!.com/albums/u88/P!.!.!.Www@QuestionHome@Com
Not that much!. Wait a while, and keep it in good shape!. Or just read it!. It's a pretty good book, after all!. I don't think it will increase too much!. All the people with signed copies will have kept theirs looking brand new!.!.!. Those will be worth way more!. It's worth something though!. Check Amazon!.comWww@QuestionHome@Com
Depends on if it's hardcover or soft!. Soft isn't going for much more than $10 on eBay!. Hardcover is going for closer to $20-$30!.
Keep it for awhile and see if it increases in value!Www@QuestionHome@Com