Rough estimate for kitchen and bathroom total gutting?

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I'm wondering if the experienced rehabbers here have a good rule of thumb for a total kitchen gutting (not a high end rehab; a basic rehab but with new appliances). Same question for bathroom total gutting where you are replacing a sink, toilet, and full tub surround.

I'm not sure how regional cost estimates are; I'm looking at central MA, blue collar cities like Worcester or Fitchburg.