The value also depends on factors like the rarity of the edition. If it's a less common version of the Jane Austen novel in mini book form, it will likely be more valuable. Also, if it has any unique features such as special illustrations or a foreword by a well - known critic, that can increase its worth. In general, these vintage mini books are valuable to Austen fans, collectors of vintage books, and those interested in the history of book printing.