I'm building an item mediator portal, something like ebay where people can sell stuff and other people buy it. What payment gateway or systems out there to use that does this? What I want to do is have the sellers connect their account to the system to receive money and the buyers just pay with credit card OR from their account. I'm also taking a percentage of the items sold.
How would I go about setting up the logistics and what 3rd party system would I be using?