eContent Pro International Press is confused.
https://www.researchinformation.info/news/u-s-book-publisher-launches-under-platinum-open-access-model/

It says it's “the first U.S.-based book publisher to operate exclusively under a #platinum #OpenAccess publishing model."

But it also says that "the open access processing charges that offset the publication costs are funded by individuals, sponsoring institutions, grants, and so on" and that it's "committed to offering some of the lowest Book Processing Charges (#BPCs) in the industry."

#BuyerBeware #PlatinumOA #Publishers #ScholComm

U.S. book publisher launches under "platinum open access" model - Research Information

Publisher "committed to equity, transparency, and author empowerment, eliminating barriers to knowledge dissemination"

Research Information
Still have a lot to learn about Diamond OA journals. I thought they were usually self-published ot hosted by research institutions, but it turns out some are hosted by commercial publishers, such as Springer for SJES. I wonder what it costs to the learned society in question. https://sjes.springeropen.com/about #DiamondOA #PlatinumOA #APC
Swiss Journal of Economics and Statistics

The Swiss Journal of Economics and Statistics (SJES) is blind peer-reviewed open access journal published under the brand SpringerOpen. SJES publishes ...

SpringerOpen