Design an E-Commerce Computer Retail Site (School Project)!

Looking for a company or people, who can design me a computer retail site. This site doesn’t have to be too fancy, because I don’t have too much money to spend on it. All I want is a simple e commerce site, where people can choose a computer, software, or repair service and buy them. I want a back-end, which will allow me to add items, and set prices. The design and appeal don’t have to be outstanding; I mainly want the “concept” designed. I have around $200-300 to spend on a computer retail site, I need to be able to add computers, and the site should allow people to add items to a shopping cart, and checkout, and be able to use payments such as credit cards, and paypal. This is mainly a school project and isn’t going to be used to sell actual items, so I’m not focusing on the design, only the back-end (admin-end), which will allow me to set prices and add items. ALSO I want it to function so that people can purchase these items. For further questions or if you have a sample of how it will look you can email me at GAF, or at kandaswamy,karthik(@)gmail(.)com Thanks!