The reactions here to the money for Mings and other signings reminds me of something I saw a few years ago in the NBA.
The NBA, like a lot of American sports leagues, has a salary cap for its teams, and along with that cap, there's a salary floor (a minimum teams must spend on player payroll). That salary cap and floor is directly proportionate to the revenue the league brings in on an annual basis. Well, a few years ago the NBA signed a new TV deal with ESPN for billions of dollars. This meant that the salary cap jumped significantly in one year, and that first summer of free agency the players were signing these huge money deals, and every reaction was the same "$15 million for that guy!?" etc.
It was just the new reality of NBA salaries, and I believe this summer we're having that same kind of reaction to transfer fees. Yes, they seem high compared to what we've grown accustomed to, but this is the new reality of the sport. And with players getting quicker and even more athletic and technical than they were before, capable defenders who can keep up with them are more valued than ever before, so we're really seeing the spike in prices for defenders like Mings.
I'm not thrilled at paying so much for a player who has injury concerns, but this is what it is now. I can only hope that we stick around in the Premier League long enough that we're no longer cognizant of it.