This is a interesting article from Tigernet a Clemson Tiger site, where they detail how much Clemson would make off their recent national championship. There were a few noteworthy points from the TigerNet piece.
1) Clemson was provided an additional stipend of $750,000 for playoff travel by the ACC.
2) Clemson created and licensed their own national championship logo to sell on merchandise.
3) Clemson will show a profit on their playoff trip this year.