92182 Shopping cart simple

Background information: Please see: [login to view URL] This is what is desired Don't care about payment integration 1-Buyer are a registered customers with us 2-Sellers are registered merchants with us Seller can list their items, post photos of items under a selected category Buyer can shop online Seller should be able to update everything about items I need admin to appove, update items Add categories, but use existing categories on [login to view URL] as basic categories All other functionality as available on 2checkout We will handle the debiting and crediting of account of buyer and seller What we would need to post to our payment engine are: few parameters 1-Item id 2-shipping cost 3item price 4-Total price 5-email of merchant 6-email of buyer 7-name of item and few others which are captured when merhants are listing items success url failed url logo url We do the internal processing and we either redirect to merchants success or failed url or default to ours I need a fully functionaing cart.