I am building a website that I will be hosting web sub-domains through different hosting companies. I know PayPal, Google Check out etc... And I know that I can use them. What I am looking for is a way that I can use a single website for checkout. Every instance of the software has its own checkout, but I would prefer to dump them all in one cart and not have to set up multiple accounts with payment processors. I looked into getting a multi-site ssl certificate, but for 2 reasons I understand that this will not work. The first is that they must be hosted on the same server, and/or they cannot be used on a shared server. Now the next question you are going to ask is why are you using shared servers etc... The reason is because some parts of the site will have light traffic, and other parts will have heavy traffic, plus I believe that it is my best option at this time including Cloud hosting. Have you ever wondered why Craigslist does not charge for posting classified adds, I am sure this is one costly reason? Now I need a solution for this. I have a dedicated server to run the check out on, and I am looking for a solution. And please do not even mention Magneto.