Quality of the Both Paid and Unpaid Journals are good only. The think is timing
Very good article that talks about the differences of impact factor between specialities, which shows that the impact metric is a very skewed measure. It also de-bunks the myth that those who 'pay to publish' are producing inferior work. - Take time to read it :-)
In case of social sciences, the quality of the papers published in paid journals is extremely poor. An author should put the paper in dustbin instead of payment of the publication fee.
Why Isn't Academic Research Free to Everyone?
Quan Hoang Duong
South East Asia Reseach Association of Viet Nam
University of Port Harcourt
Åsa AB Fasth, Fast-Berglund
Chalmers University of Technology
University of Campinas
Technische Universität Berlin
University of Limoges
Nicholas E Rowe
University of Lapland