Create an Ecommerce website with dropshipping model

We need a team who have Existing Ecommerce store with dropshipping model which they can customize for us. [Please note that we don't have any existing website]. So apply only if you have existing website with dropshipping model to customize for us. Website requirements: Sellers will not be able to sign up for account themselves. Admin can create accounts for them. The product price must be approved by the admin. After a buyer place an order, the payment will directly be sent to the seller and a commission will be sent to the website's financial account. If the seller refund a payment, the website's commission amount should be refunded as well. The site will have shipping tracking option. Both the buyers and sellers will receive email notification with shipping details after an order is placed. The buyer can contact the seller for any problem after an order is placed. The main admin can add or remove more admins. You will need to make design changes too.