Hello my dear colleagues,
Recently, we published a paper in one of Wiley journals. We spent a great deal of time designing a cover image for it. Now, it has been accepted as a front cover page. However, they have asked to contribute around A$3000 for that. I want to know what is your idea about that. Why researchers need to pay that amount of money after the hardship of passing the peer-reviewing process and designing a high-quality image? Please share your opinion about that.