It's definitely a comma. She disclosed earning around USD$2,500. I'm in that person's FB group. However... Medium is not the one selling her stories, she is. She owns an entire business enterprise where she also sells courses & coaching. It isn't useful for the average writer/photographer to compare themselves to someone who owns a large list of people eager to open the stories as part of their course of study. Comparison is the thief of joy.

Author of “The Moldavite Message.” Seeker, traveler, birder, crystal collector.