ebay API / zen cart multi channel managed software

demand: as title-- ebay API/Zen Cart multi channel managed software, basically, what I need is almost similar to project number 1006488 https://www.freelancer.ca/projects/PHP-Javascript/ebay-API-zen-cart-multi.html , The difference is I need a ready product which wrote by PHP/Mysql with Apache, vendor need to have a web site for us to evaluated, source code need 100% provide without any hiden code or micro so we can maintain it late. More function would be give once your function met our requirements.