You will see previous invoices with exact amounts within your Shopify admin because we connect with Shopify billing. Here is where you can find this information.
You can check monthly active users on your dashboard. Then use the slider on our pricing page to check how much you will be paying based on the amount of active users you have.
If you have any additional questions, feel free to email [email protected] or chat with us in the bottom right hand corner of your screen.