There seems to be quite a lot of this books listed for sale on several sites and the asking prices are running $20-$35. Asking prices do not represent current value as only a sold price shows what someone was willing to pay for a similar item. Books are found in all kinds of conditions as well as different bindings so it will be difficult to pinpoint a true value.
The best places to do research are eBay and Google for different sites. You'll find a lot of listings but difficult to find sold listings.
Books are very slow sellers and there is no way to tell how long a book has been listed for sale as some book sellers post books and leave them listed for months/years and many never sell.
There was a recent sold book shown on eBay and it looks similar to yours but may be in better condition? Too difficult to tell just comparing pictures. The binding may be different also. It sold for $15 + $2.80 shipping. We can assume this would be the 'current value'.
Currently, a lot of people are trying to sell off older books online. There is quite a lot of books listed on eBay and yours is one of them. When books are over 100+ years old a lot of people who are collectors are interested in these types of books. If you were to try and sell this book online you may get around 10-15 for this book.
People who craft, with paper, love to have these kinds of pages! I would put it on e-bay and charge $5.00 for five pages of this book. You can sell individual pages at a time, and make more than you would selling the whole book.
Have a great evening!