Hi,
Im Amir from Delta Code, a software house based on Egypt.
i just read your project and i know you need a market place with a backend to control the website , sellers , orders and everything , we have a very long experience building this in a professional manner and for NO UPFRONT PAYMENTS, we also provide further support.
we have a Free offer to provide the full analysis and documentations for free for your project , it will help you present it in professional and clear manner.
Contact me now and get your analysis with no commitment from your side.
Thanks,