I'm a life sciences Ph.D. student preparing over the next few months to begin applying for a postdoctoral fellowship. Several of my potential advisors are on the coasts--California, Boston, Seattle--where the cost of living is quite high. Others are in the Midwest where the cost of living is much lower. I've lived a lot of places myself, so for the sake of argument we can assume I'd be equally happy moving to any of these places.
Although I don't want money to be a factor in this decision, I do have a wife and children and (insert salary here: $45,000 for example) allows a much different standard of living in the Midwest than Boston or Long Island. For those of you who received multiple postdoc offers--is this something that they take into account when setting your salary, or can I expect more or less flat offers across the nation?