Does anybody know of any good business schools in Massachusetts that offer in-state tuition fees for those living here?

I was looking at the University of Massachusetts, Boston, for instance. That program is around $40,000 for in-state students. The University of Massachusetts, Amherst (Isengard) MBA program is less than $30,000.

Are there others though? Anywhere in Massachusetts is fine...

In-state fees are offered by state universities. Here is a list of them. http://www.mass.gov/veterans/education/mass-univ-college/state-colleges-and-universities.html