Is Dana Brown a good negotiator?

If I remember correctly, one of the main reasons Crane hired Dana Brown is because he's a good negotiator from his time in Atlanta. Are our recent deals for Hader and Altuve good deals? Do they give Crane the financial latitude to bring in talent elsewhere? Altuve will be 34 early in the season making $25 million/year. Is Hader worth $95 million? I don't know. Genuinely asking.