Many Publishers are providing open access policy in order to distribute the publication to readers more without hurdles. In this regard the allowed payment is acceptable when we consider the objective of the publisher.
But many journals are functioning with the name of " International journal', and they are asking substantial money for publication but not indexed in reputed concern. The impact factor is unimaginable because they cover all topics including Science, Engineering, Technology in a single umbrella. Many of the young researchers are cheated by these kind of publications and there is no impact of them. So new researchers should have sufficient awareness about SCI, SCIE, Web of Sciences, Scopus. then only their work will be recognized through appropriate publications.