A predatory publisher exploits the academic need to "publish or perish" with excessive costs, false or misleading claims about quality, and little regard for scholarship.
It is somewhat complicated to identify a predatory journal, but easier to identify a scholarly journal.
Just because they charge for OA Gold, does not make them a predator.
Evaluate the journal and determine the level of scholarship and truthfulness. Some predators sell OA Gold that is low quality, has no peer review, and may not even be permanently accessible.
There are two paths to Open Access
OA Green - "Self-Archiving" preserves the author's version in an Institutional Repository.
OA Gold - Preserves publisher edited and peer-reviewed version. May require author costs.
Want to know the submission guidelines, check Cabell's.
Want to know the peer-review and publisher status, check Ulrichsweb.
Want to know the journal impact factor, check Web of Science.
For more help with journal analysis, explore our Guide on Journal Analysis.