I have been an enthusiastic MongoDB user for a couple of years now. My business is very small and the utilization of the database is very irregular. For example, I only have a higher workload on one day of the week and on most other days I only have a load in the morning and often nothing at all at night and at weekends. That's why the smallest available plan that can also be used in production (M30) is actually too expensive for me. A pay-per-use pricing concept would be ideal and I'm not sure whether this would be possible as a cloud solution with MongoDB. Since I haven't found a solution, I'm biting the bullet and switching to AWS DynamoDB. I don't need the infinite scaling features, but the ability to pay by use is infinitely valuable to me. I really hope that something like this will be possible in the MongoDB world at some point.