Payment Forms and payment submission limits?

Under my account it says 10 payment submissions. What does that mean exactly and do I have to pay extra to have subscription forms that use paypal for payment? Do I only get 10 submissions a month for free and then what do you pay to use this form per subscription submission? What if people select recurring billing and pay monthly? How much for each form used???

Update: Please check the following page to understand more about the account's usage and limits: https://www.jotform.com/help/408-Understanding-Your-Account-Usage-and-Limits 

You can subscribed to different plans, we have Free, Bronze, Silver and Gold. You can stay on "Free" plan as long as you liked, although there are limits on it, see limits on pricing page.

For Free plan, you have 100 regular submissions and 10 payment received, all are monthly limits. Payment receive submissions are forms that has payment processors integrated on them (Paypal, Authorize.net, Stripe, etc...), they are usually order forms. If you have an order form then your user fills it out, and was able to complete a payment transaction, then that is counted as a payment received. 

Please do take note that when you are near your limits, we will email you about it, when you finally reached any of the submission limits your form will temporarily be disabled, and no new submission will be received. You will then need to upgrade to a higher plan to continue using your form, OR if you do not like to purchase a paid subscription, you can wait for the counter limits to reset back to "0", which happens every 1st day of the month. 

I hope that helps. Do let us know if you need more information on this.

Thank you.