Content Sense is a great add-on for Commercial, Educational as well as Non-Profit organisations.
Content Sense is a PAID service.
Free trial extractions are just to see how it works before buying.
Usage and Quota
Usage is measured with number of extraction (from image files) performed by the user.
Transaction is successful extraction of the file (image).
Quota is based on the plan that user chooses. Choose appropriate plan below as per your need.