Is the SIUC faculty's magic number $4M?

I have heard that to move all the faculty at SIU to salaries in the norm for their peers at schools like SIU would cost $4M per year. I'm generally feel that if you don't like where your workplace, go find a new job, but universities are different because so much of the total compensation is retirement fund based.

Have no doubt, the very best professors leave SIU because of money all the time. There isn't much movement, but what there is comes from the best 5% of performers on campus IMHO.