"We pay" is for what particular services?

Greetings and thank you for your message.

WePay is used for collecting payments from your users. You can sell products, collect donations, or collect predefined amounts.

Please note that you need to have a WePay account for this. JotForm does not collect any payment information. JotForm does not charge additionally for payments, but WePay probably does. 

Additionally, JotForm has multiple payment gateways, so you can see all of them by clicking here.

Let us know if you have any additional questions.