Pay to submit a form -- any plug-ins for that?

Hi all,

I'm trying to find a plug-in which allows a user to complete a form and then pay to submit it. Also important: The form data needs to be emailed automatically to multiple recipients upon approval of payment. Paypal is preferred as the payment gateway.

I see that Gravity Forms can do this (in theory) but it's very expensive. I think I'd have to purchase the $200 developer package. Any other ideas out there? I had a Joomla plug-in which did this, and now I'm looking for a WP version.