Hey, little late on the reply here. Sorry, I don't check this profiles often.
The price I mentioned is our standard for painting/glazing existing, previously finished cabinets. And yes, that includes boxes and finished ends, but not the interior of the boxes.
Might be more or less depending on the scope such as grain fill or no, glazed or solid, etc..
Goes without saying of course that that price range is regional, and feflects my specific cost needs.