Low cost product selling site.

We require a product selling site for our organisation. We are a web development company in USA, looking to outsource our project to cut our cost. Site will have several pages that display catagory wise product informations. We need to modify the poduct page ourselves and need a complete system that provide us ability to do that in real time. This will be a Mini CMS that manage the product section of site. We will hire the company who provide us demo and have past expertise. Please quote your best possible rates along with your profile and portfolio. Those who have already done the similar project should apply as we are not going to hire any one who can do this without any prior experience.