Is it possible to create a payment form with no amount?

Is it possible to use your platform to create a form that the user would fill in the amount/total and complete transaction?

We do not have set pricing for each service and that is what makes it difficult to create a real e-commerce option. Only want to be able to give our customers an opportunity to pay before they come in by giving them the option to go to our site and have them plug in the amount they are going to spend and know that the service is paid for.

It is possible to create an order form without receiving payments on the form by using Purchase order payment method.

https://www.jotform.com/help/460-How-to-Create-Payment-Form-with-Purchase-Order

If you want to receive the payments through the form for custom amount, you may setup the payment field using User defined amount in the payment type.

Hope this information helps. Please give it a try and let us know if you need any further assistance or referring something different. We will be happy to help.