To offer Open Access content Migration Letters levies an article-processing charge of USD 800 for each article accepted for publication in a regular issue, or USD 600 for publication in a special issue for the developed nations. However, a discounted fee of USD 450 for regular issue and USD 300 for special issue for authors from developing countries. This is to facilitate greater participation from researchers in those regions, fostering diversity of perspectives and promoting global collaboration in academic research.