No, imo $99/month is extremely high. I pay Google $40 and Slack the same. They do a lot more data crunching and traffic. To get me as a customer, I need yearly payment that is not based on my profits. I am willing to pay anything below $240/year

My guess is that the maker is trying to push people to purchase annual plans to help collet money up front and mitigate monthly churn.

Would be curious how much of Gumroad's sales are from a steady stream of monthly revenue vs. one time campaigns. My guess is that most Gumroad creators make the bulk of their revenue at the start of a campaign.

If you assume the "per month" quotas are actually the total amount of sales for the year, the price for an annual subscription is between 1.5% and 10% of sales.