The main reason why some researchers publish in paid journals is that sometimes the student they are working with is pressed for time. Such time limitation leaves no other options available. As you know, quality journals take a long time to publish a work and the lengthy proceedings make post graduate students try a paid journal. In such cases, however, care should be taken to make sure that the targeted journal is not predatory.
Many highly ranked journals would not require any payments. In some cases, you are given the option as to whether you want an open access status to your paper (in which case you are required to pay). Some journals, of course, are not indexed and are of the pay-and-get-published sort, and these are not recommended at all.
The main reason why some researchers publish in paid journals is that sometimes the student they are working with is pressed for time. Such time limitation leaves no other options available. As you know, quality journals take a long time to publish a work and the lengthy proceedings make post graduate students try a paid journal. In such cases, however, care should be taken to make sure that the targeted journal is not predatory.
Actually if you visit majority of the journals websites even with impact factors the publication charges are mentioned like circulation, Dove press etc and certain discount are also mentioned region wise low income countries, middle income and developed countries, 25%, 50% etc so what an author can do for such journals.
Scientific publishing is a requirement for all centers and universities,
Some centers cover publishing costs. Some universities are designed for scientific publishing in certain journals. However, with the trend towards patent publishing, the issue will vary, particularly some of the proliferation of material investment in scientific publishing
Mostly journals that charge APCs are fast in review processes. This doesn't in any way means such journals are predatory. If you are not pressed with time to make research findings public, why not opt for free high IF journals?
1. Attraction of the IMPACT FACTOR of the journal.
2. attraction of the OPEN ACCESS publication of articles.
Closed access journals with moderate Impact Factor and demand affordable money are there.
Open access good journals with or without Impact Factor (as ESCI category of Thomson Reuters) without any fee are also there.
But if anybody want to publish any article in a good Impact Factor journal in Open Access (everybody can read and download the article without paying any money), they have to pay a good amount of money.
It depends upon your desire, compulsion, choice, pocket.....
Journal publication is a business in most of the time.
I agree with Brother Dickson and Prof. Pattanayak. If your are not in a hurry Open Access journal with no paid subscription is appropriate. However, the are even some proprietary journals that delay even when you pay.
Most reputable unpaid journals are now publishing faster with the increasing introduction of open access option. My philosophy is also not to pay to have my research published but, if I have to, it must be in a reputable journal. Even some books will now invite contributions and then ask you to pay for publication - Quite frankly, I do not bother with those. You are better off saving your money and send your paper for publication in a reputable journal with a decent impact factor. Publishing your work in non-reputable journals will, in the long-term, not give you the recognition you and your research deserves. Better to publish less papers in reputable journals than to publish many more in non-reputable journals. To put it differently, in reality people take you seriously if you publish in journal with high impact factor. So for me, what matters isn't if the journal is paid or unpaid, but if the people that matter in my field read that journal. If it is a paid journal and people that matter in my field read it, I'd strive to publish there.