Question Description:
Recently one of my friend submitted an article to a journal with "No fee" mark is vivid on the journal website (Medknow published). There was no text available about any fees related to article processing or any other fees on journal website. However, after submission, editor sent an email stating that if author wants to proceed further, he should assure that, after acceptance, he has to take annual membership (INR 5000) of the society which publish the journal. Obviously, we do not have any question about credibility of the journal. But, as there was no mention about this fee on website of the journal which was informed after submission, will this behavior be considered as predatory?
Answer