Pre Sale Question

You see on the left side there is a contact form for the dealership who owns this car listing. Can we integrate Gravity forms to serve as lead capture submission forms for every specific dealership account?

Yes, Gravity Forms can do this.

If so, I see that with a developer license we can charge the dealership an amount of dollars every time the submission form is completed.

You can charge the dealership however you like, but you do not need a developer license to do it.

Does the form plugin work as the billing system too? Meaning, does this plugin also include the recurring billing feature if dealerships want to be on a monthly subscription rather than a pay per lead plan?

The plugin does not work like a billing system. With a developer license, you can sign up a new client for either the Freshbooks service or a subscription plan with PayPal or Authorize.net, but neither of those options have anything to do with contact form submissions.

I think Gravity Forms can help you, but it's not going to work as you described here. The contact form functionality is available with any Gravity Forms license. To create a new customer, you can use a Gravity Form to collect their information, again, with any Gravity Forms license. If you have a developer license, you can use the PayPal or Authorize.net add-on to set up subscription-based billing, which would work for your monthly subscription plans. For pay-per-lead invoicing, you will have to manually determine how many submissions there are and bill them manually using whatever billing service you prefer. Gravity Forms can't do that for you. It will keep track of views and conversions, and you can integrate Google Analytics for more accurate click tracking.

Also, what about the Freshbooks plugin?

Could I set up fresh books to apply a "Cost per Lead" to an account and have it automatically invoiced to the dealer account at the end of the month?

The Freshbooks add on is not designed to work like that either. The forms are designed to be submitted by your client, and you are charging your client. In your circumstance, you have the customer to worry about. You're not charging the customer. So when the customer submits his information, that is a lead and something you can charge the dealership for. But you are not charging the visitor, and that is how all our add-ons are designed to work.

You need a different solution to charge your client for form submissions by customers.