Design & Setup Ecommerce Website with Amazon & Ebay Integration API

READ ALL DETAILS PLEASE ***Design & Setup Ecommerce Website with Amazon & Ebay Integration*** 1) Design and create an Ecommerce store - Prefer Magento or BigCommerce 2) I have a supplier that gives API for products - i need this set up to my website and products uploaded to my site 3) I need push to Ebay and Amazon integration in my website 4:) My Supplier doesn't give UPC or ASIN for products - Amazon requires this I need this issue resolved (i can buy UPC's if need be, but still need a tool to apply the UPC to the items and be able to list, I can't apply the UPC manually as i have too many items and need this somewhat automated Other Notes --need it to price my items at the percent markup i want --i have cpanel with linux or windows if you need