Most of that can easily be done yourself with the basic tools and will be cheaper as well. But if you don't have a garage, working outside in the cold Chicago weather can definately be a pain... I know used to live there.
I believe most garages in that area charge $75-$90 as shop labor. For example I believe if you call any dealership or shop it's about $140 for diff service, which is bull, cause it only take 30mins and about $25 for fluid.