Griffons mate for life, and will often search for years to take vengeance over a slain mate or child. It was likely this innate stubbornness and fierce loyalty that first brought them into domestic use as mounts and guardians of treasure hoards. Despite the inherent danger, trade in captured griffons and stolen eggs is brisk, with their eggs worth up to 3,500 gp apiece and live young twice that. Characters eager for griffon mounts, however, should note that buying or forcibly domesticating intelligent creatures like griffons is still recognized as slavery by most good deities, and winning a griffon's allegiance of its own free will is no easy task. Reaching a mutually agreeable accord (or even a friendship) is a much more elegant and safe route to securing a griffon mount.