We have been working with multiple eCommerce/online-retail platforms like eBay.com, Amazon.com, Sears.com etc since a long, and have delivered multiple projects related to these. We also offer our own online hosted service for retailers - www.segemai-retail.com, with following features for eBay: - Fast item addition: with presets/default, item-templates and custom feed csv, you create new items super fast. Ask us if you have any questions on these stores or need to use their APIs.