You are spot on BC. This is why Collectors or Military Historians who write books of this type are strictly engaged in labors of love and dedication. Most projects like this are published at a loss or break even. Having provided written sections, captions and provided literally thousands of photos, I can guarantee you that even when compensation is involvement, it would break down somewhere around $ .05 per hour! My hat's off to those who take the time and make the effort.
On a separate note, it is my understanding that Nick has AN EXTRA COPY of this beautiful work that remains unsold. Since he acquired additional copies on behalf of our members, hopefully we can help him recover the cash he is out for having helped GB members.
Thanks again Nick! I've used this book to great effect while revamping and adding items to my WWI Bulgarian display.