From what I can see there are a number of factors that affect stock sales. Since Alamy ensures a minimum quality level is met by all contributors I’ll ignore it as a factor. Subject matter and proper keywords are also clearly important but for the sake of this discussion let’s assume subject and keywords are adequate.
Looking through the forum discussions I see constant references to a minimum portfolio size as being an important factor in regular sales, but I also wonder if there isn’t also a time component affecting sales. If say, 3000 images represent the smallest portfolio that will