For those of you that have never meet Brian Kubicki he is a very nice guy, doing some great work in Costa Rica. I just checked out his website for the first time in a long time and saw this book for sale, and I know the money will go to a good cause. If even looks like he is offering a guiding service for Costa Rica.
http://www.cramphibian.com/LeaffrogsofCostaRica.html
and his homepage
http://www.cramphibian.com/