As for North American sales, I do have one suggestion for @Tim Brown and @snowleopard . I would suggest you contact (email) the Association of Zoo & Aquarium Docents and ask if one of their members would be willing to post a review in their newsletter in exchange for a complimentary copy of the book. This might result in at least a few purchases from their members. (I have not been a docent myself for several years now, so I am NOT offering my services, but I did go to one of their conferences which had several hundred attendees, so I think it's worth your time). Also @snowleopard may want to contact his nearby Woodland Park Zoo (or even Point Defiance) to see if they would be interested in him doing a special talk with signed copies for purchase afterwards.