Many customers don't tip or only tip like $10. Which is good compared to pizza places.... except you'll likely have to split it with whoever made the order. So overall, 6/10.
The mammoths completely disappeared from mainland habitats by the end of the Pleistocene epoch, and the last remaining populations were lost 6,400 years ago from the St. Paul Island and, finally, 4,000 years ago from the Wrangel Island, several centuries after the constructions at Giza.
What needs to be kept in mind, is that Mammoths inhabited a planet with a drastically different climate than it is today, and they were not the only species to die out with the end of the last great Ice Age. The world changed, and they were simply unable to thrive in the new conditions.