Is this a fixed sale per user per month (like a SAAS) or a user buys things with variance dependong on what they specifically needed to buy ? I am asking becaus

Is this a fixed sale per user per month (like a SAAS) or a user buys things with variance dependong on what they specifically needed to buy ? I am asking because you have 5500+ users with 76K revenue. Simple math says you make less than 2 dollars per user per month. So I am guessing it is more like one user buys stuff for 20 dollars while 20 other users did not do anything in a single month ?