Ecommerce script with auto database update

This project requires an ecommerce website selling dropshipper items with auto database update function. You need to install the script and let me know the name of the dropshipper which the database comes from. It doesn't matter on the nature of the product. I need this kind of website for reselling purpose. When the website turns out to be popular, I'll give you repeated project on the installation of the same script but to different customers. Please provide demonstration on the script/website. Moreover, since this project requires a long-term relationship with you on the installation of the same script, a competitive bidding price on your part is required to maintain my profit margin.