I have a use case for GF and the pay-pal add-on, but am not sure if it's possible.
The website will be for processing parking violations at a family of apartment complexes. They currently issue paper carbon/copy tickets; leaving one on the windshield and bringing the copy back to an admin. I want to create a form where the admin keys in the license plate number and selects a code violation. Based on the code violation it populates another field with the violation charge amount (pre-defined). The admin would then submit the form. Access to this page could be restricted in a number of ways.
As a result of submitting the form, I'd like it to create a unique line item or post with a paypal button linked to the violation charge amount. Since the only information available is the license plate number, people would visit the site and search for plate number. They could then simply click the paypal button for the line items/posts that match their search. They'd complete the transaction through paypal, and that's it. They don't need to register with the wordpress site or anything else.
Is this possible? If so, will it require serious custom coding of GF or WordPress?