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.
You can try the method described in this guide or as an alternative, you can use form collapse fields and add checkbox fields for the options:
Now you can add the price of each item as a calculation value:
Finally you can add a form calculation widget, that will calculate the total of the order:
On the payment field you should now select the "collect donations" option > get amount from the "calculation field":
You can test and clone the demo form:
Let us know if we can assist you further.