I just read the following article from Physics Today called Commentary: On the quality and costs of science publication:
https://physicstoday.scitation.org/doi/10.1063/PT.3.4259
I think this article echos some of the concerns for scientific publication, particularly the trad-offs between cost and quality. I started another discussion about 2 months ago looking for a journal in my field with a reasonably high impact factor, but low (or no) publication costs because the availability of funds for this coming year are uncertain..
If I don't have the funds for high quality pay-to-publish journals like AGU, is it better to use a preprint server like arXiv.org (or even Research Gate), or to publish in low impact free journals? Furthermore, should we as scientists be making a conscious and concerted effort to move away from pay-to-publish journals to improve the access to publishing and quality science?