One or more of your players were kicked off the NT roster/didn't play any minutes for the NT?
Hmmm.. no minutes influences so much?
If a player plays no minutes for the NT, then he's not treated as a NT player for merchandise purposes, I believe (this, or the effect is quite lower). Given that you have multiple NT players, if more than one of them skipped an NT game, this can sum up to a significant amount of money.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."