I'm with Mellinger in thinking that got Hunt it really isn't all about the money. Hunt is smart. He knows that with wins and championships comes national notoriety, a national fanbase, merchandise sales, marketability, etc. But it all goes back to winning. Again, hindsight is what it is, but he went out at the time and got the No 1 GM on everyone's list. You don't do that if your intent is just to make money.
I suspect if things don't turn around quickly, he'll force Pioli out after the year, or force him to go get a QB...