1) Are there example websites showing the functionality of the Product Add-on? Is there a free trial to test it out? I want to know the difference between paying for the add-on and creating product pages with the existing free tools.
2) Does the Product Add-on give me PayPal integration? Or do I need to separately pay for the Business Add-on?
3) What is the difference between using (1) the PayPal integration from the Business Add-on and (2) embedding the PayPal code directly?