Eggs from the dragons of Ridback Mountain are valuable ? not quite as valuable as gold following the last market fluctuation, but still TOTALLY worth the hassle, especially since it's not like YOU are climbing the mountain and searching through dragon caves.
That's what peasants are for...
All the empires have sent their intrepid Adventurers out to collect Eggs, but not all will succeed! It gets crowded on Ridback Mountain, and there are only so many dragon Eggs to go around..