If you need a form that is linked to pay-pal but you want the options on adding your own content and tabs, then this is the form for you. Here is the form in action on a website I designed for StrideOn Knee Walker Rental.
It’s Easy to Extend Gravity Forms to Integrate with Several Popular Web Applications and Online Services
Gravity Forms allows you to quickly and easily integrate with a variety of third party services such as PayPal and provides for even deeper integration with WordPress through our collection of optional Add-Ons. Hot stuff!