Some journals, known as predatory journals charge large APCs without providing the peer review and editorial support that can be expected from a quality scholarly publication.
Common red flags associated with predatory publishers include:
Using false or misappropriated ISSNs;
Posting fake academics on the editorial board or using the names of actual academics for the editorial board without their permission;
Accepting and publishing articles exceptionally quickly without peer review or quality control;
Repeatedly contacting and harassing scholars to submit articles and serve on editorial boards.
And keep in mind, you can always contact your library subject specialist for assistance with assessing the reputability of a publisher.
Checklist (from Declan Butler, Butler, D., & others. (2013). The dark side of publishing. Nature, 495(7442), 433–435.)
Is the journal listed in Ulrichsweb (the authoritative source of detailed information on periodicals of all types -- academic and scholarly journals, Open Access publications, peer-reviewed titles, popular magazines, newspapers, newsletters, and more)?