Journals have no linguistic editing, no proofreading, and the typesetting is outsourced to India - at least Springer does so, as I know from personal interaction with the typesetters. Articles must be delivered more or less camera-ready according to the journal style. Editorial boards and all editors, as well as as reviewers work for free.
If you have a research group that actually pays for being published, then that's called "grey literature" or even worse, just plain self-publication, and it's worth nothing. It can even have a negative impact on your CV.