This is a difficult question to answer because the price of a book depends on many factors such as the quality of the book, historical value, publishing company, region, market demand, etc. If the book is very precious and rare because it is first published or has precious copyright information, then it may have a high price. On the other hand, if the book is very old and has been printed or pirated many times, it may be cheaper. In addition, market demand could also affect the price of books. If the book is very popular in a certain area, it may increase in price. On the other hand, if the book is not very popular in the area, the price may drop. Therefore, it was impossible to determine how much a hundred-year-old book could sell for. It depended on many factors. It is recommended to contact your local bookstore or library to ask if they have this book and find out the price.