Build an Online Store

I want an ecommerce store that will have the ability for sellers to have a dashboard where they will upload all their products and buyers will come on the site and buy and pay online directly site will have to be in 2 languages English and Turkish site should be simple to navigate NOTE: I DONOT PAY UNTIL SITE IS COMPLETED ONCE ITS COMPLETED AND CHECKED I PAY BEFORE IT IS HOSTED NOT BEFORE I DONOT CREATE ANY MILESTONE if this is not okay by you please pass. Thanks