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.
As I understood from your message and your this form, your request is something like following scenario:
1. Your enduser fills the form till the price field by entering the necessary information which are dates, terminal, car details, etc. Then s/he submits the form.
2. Once you get submission, you determine the price according to user submission.
3. Inform your user about calculated price
4. Once your end-user confirm and pay it, you should get a confirmation notification about payment.
Please let us know either your concern is this or something different. We will do our best to find a solution to meet your requirement.
Waiting for your return.