Create Clone of RatemyProfessor.com or similar rating site

I am looking to either create or buy a clone of a website that would be able to be modified. I am looking for a clone of [login to view URL] or a similar rating site. I need something that will be able to be modified in terms of design and usage. If you do not have a clone, bid if you can create one and give me the price you wish to charge and length of time it will take to create such a website or similar ratings site.