It was recently disclosed that Greg Hardy was paid 150k (75k show and 75k win) to crush a tomato can that had already washed out of the UFC — who, by the way, was paid 10k for his troubles.
In the grander heavyweight scheme, Curtis Blaydes, fresh off a unanimous decision over Mark Hunt and a vicious bludgeoning of Alistair Overeem, was paid exactly half (75 show, no win bonus) to have his brains concussed all over China by Francis Ngannou. Why bother being good when being famous nets you the same pay for a fraction of the brain damage?