Hard to compare a lot of these schools as the guys who seem low are just teams that haven't renewed in a while. The jig is up and these companies will pay, just to have to see how much you can get out of them.
Let's face it, apparel companies are rip off artists. Selling $15 sneaks for $150, or $10 jerseys for $75, etc. You pay much more for the "brand" and "marketing" than the actual product. If they want to keep their brand up they need someone to rep them and need these contracts. I really think 8 million a year is small change to these marketing pros.