$0.01 per simple operation sounds very expensive to me. This would add up very quickly. Edit: I misread it. Perhaps instead of inventing your own point system

$0.01 per simple operation sounds very expensive to me. This would add up very quickly. Edit: I misread it. Perhaps instead of inventing your own point system that you have to explain and hope silly people (like me) don't mix up you could take a lesson from Google Cloud and just lay out the pricing in a table. If you ever add another service you'll have to integrate it also into your made up points system.