Hello, I submitted a manuscript for publication in a certain journal and the manuscript was accepted for publication 2 weeks later (from the time of submission) without any review comment. I am then requested to pay an APC (publication charge) which is relatively high before i can see the galley proof. My worry is i doubt the quality of the review; at least the manuscript should have minor comments from reviewers. Is this a predatory journal? and should i go on to pay the APC? Your comments will be highly appreciated. Thanks