Wordpress Plugin Shopping Cart

I need someone who can create a Wordpress Plugin Shopping Cart for me along with the shopping cart theme. The theme can be a simple easygoing design. The cart needs to perform pretty much like the one found here: [login to view URL] I would like the script to have the ability to use paypal, 2checkout, google checkout and clickbank for payment processing. It should also have the ability to be used to promote affiliate products as well. And if possible, if you can create a feature in which it can import affiliate product datafeeds offered by places like commission junction, linkshare or netshops, that would be great. However, I am flexible on that feature for the time being. If it will cost you too much time, complicate matters or raise the bidding price considerably, then I will hold off on having that done. Scripting knowledge should be: PHP, Javascript, Ajax. Database Knowledge: MYSQL. Design Knowledge: Wordpress Proficient, CSS, HTML, or of the like. Timeframe for delivery: I would like this completed within 4-6 weeks.