Only one fighter would get the 10 and 10. The loser only gets 10. If there were 8 fights on the card and the three dark fights are paid that amount you are only at 90K for those 3 matches. Payroll for the entire card would still be under 1 mill. That is a bargain considering the numbers they are doing at the live gate and PPV.
Spike shows will have more undercard talent and will have cheaper payroll requirements.