I’m not even sure what he’s talking about. Open access journals are the ones who charge authors to publish.

If you publish in a journal that has closed access, there is generally no fee to publish. If you want your paper to be open access, you can tack on an additional open access fee so that your paper doesn’t end up behind a paywall. The last time I looked - and this was several years ago - the going rate for making your paper open access in a closed access journal was about $2-3k. We always budgeted for publication fees when we were putting together our funding proposals.

The fee structure is similar for open access journals, except that there’s not a choice about paying them. For researchers whose work isn’t grant funded, it generally means they’re paying out of pocket, unless their institution steps in.

I had a paper published in a small but (in its field) prestigious journal, and the editor explained to me that he only charges people who can afford it, and uses those funds to cover the costs of the journal. He explained that he had a paper from a researcher who couldn’t cover the publishing fee, and he let me know that I was helping out the other person, too.

What I don’t understand is how anyone how has gone through academia doesn’t know this.