What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
If the standard payment tool is not flexible enough, you may consider using standard fields and custom calculations based on them.
Take a look at 'Calculated amount based on user selections and inputs' section of the next article to see it in action.
If you need any further assistance on this, please let us know.