Trulia did something very similar to Bills.com with their landing page. It starts with a simple form asking for "an address" (which sounds less creepy than "your address," although that's what they mean). Below this simple form field is a bright orange button that contrasts well with the hero image behind the form, and emphasizes that the estimate will be personalized to your home.
If you’re already a ClickFunnels member, you’re going to view a page such as the one shown above in the screenshot. Your credit card is already on file. Therefore the page will probably ask you if you want to use the card associated with your account. You either agree or disagree, and then you click on the ‘Upgrade My Account’ button. What’s going to happen is your Clickfunnels account will probably be upgraded to the Enterprise level.