Affiliate Marketplace like ClickBank or Craigslist

I'm looking for someone to program basically an online marketplace similar to ClickBank or Craigslist, but slightly different. I want to have a marketplace where individuals can come on and sell their own information products very easily, but it won't be as open ended as Craigslist or Clickbank. On the front end, people simply upload the informational product that they would like to sell, enter a few details about the product, and then submit it to us for approval. The product would then be listed in the website's main marketplace for people to buy and the seller would earn a commission for every sale that they earn. It's essential that they should be able to log in to a member area where they can see the amount of money they have earned in commission over the last day or week or so. In the main site's marketplace itself, there would be a search function so people can search for the products that they want based on certain keywords that the seller would write in. The products would be also grouped into categories, so you could straight up browse by category. Then, each product would have its own page where it could be reviewed by people, and where there would be a short preview of the information product. On the back end, I would like to be able to approve each product for listing on the main page. I would like to be able to securely collect and keep the payout information for each person. And I would like to integrate it with shopping cart software and [login to view URL] to accept credit card payments for each transaction. The other thing is that I REALLY would want the design to be elegant. Something very web 2.0 like [login to view URL] or Twitter or something like that. Who is interested?