Re: What is a "good" salary?
Most brand name B-schools flat out don't accept candidates with less than 2 years of post bachelor's experience in their own field. Flipping burgers does not count as experience.
there are exceptional cases, but very rare in terms of experience e.g. someone who had an undergrad in literature but joined peace corps and then stayed in some war torn area for a few years.
I know of one Kellogg MBA who did exactly that, but just the work she did with peace corps was so strng, and she made such a strng case for herself that she got in the program.