To them it would be pocket change, but I get the impression they love having money more than they love spending it.
They aren't Bezos. A few hundred million matter if you're only a billionaire 4x over. Somebody on Svrluga 's chat asked about whether owning the Post impacted Bezos on a bid for the Commies, and Svrluga pointed out the Post cost him $250 million but he's worth $125 billion (not said, but that's after the divorce).