Is there a way to automatically add the transaction fee to the cost of a product?

is there a way to automatically add the transaction fee to the cost of a product?

thanks

Yes it is possible to achieve your requirement by listing your product using regular form field. You can then add form calculation widget to calculate the amount and add transaction fee which can be passed on to payment field of form. You may like to take a look at the following guide which should help you:

Perform calculation using widget: https://www.jotform.com/help/259-How-to-Perform-Form-Calculation-Using-a-Widget 

Pass calculation to payment field: https://www.jotform.com/help/275-How-to-Pass-a-Calculation-to-a-Payment-Field

You may like to take a look at the following demo form I created for you and se if it works as expected: https://form.jotform.com/200585526340047

Feel free to clone this form for a closer look and the following guide should help you in form cloning: https://www.jotform.com/help/42-How-to-Clone-an-Existing-Form-from-a-URL

Hope this helps.

Do get back to us if you have any questions.