"Making the upgrade continues to make a big impact on my earnings, but anything can happen on Medium." That's a good and valid point Marcus. The only way to truly earn anything on Medium, you have to be willing to interact and engage with other writers and their stories. This is true, whether you upgrade or not, and that's why some writers who don't publish as much as some others might, can still have enhanced earnings. From engagement. Not even huge numbers of followers. Engagement is the key, because it sets off a chain reaction of events, resulting in $$$ Thanks for sharing your results. I too am killing it so far, but I'm afraid to document my stats. I don't want to jinx things. :-)