In order to check how much money you made, simply access your payment method account and check the different transactions you have received. If you use PayPal, go to your PayPal account and check the different transactions. If you use any other payment method(s) in your dealing with users, check the corresponding account summary. 

Remember that payments are made directly from a user to another user so depending of the payment platform you use, those transactions will appear on that system.

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