Simple Price Comparison Technology Website Needed

The engine will work exactly like [login to view URL] except a different product will be offered. A maximum of 50 vendors will come up in the comparison results and work extremely similar to the above website. I prefer the technology be written in Ruby on Rails, however I am open to other suggestions. When you bid please specify if this includes design and development, or just development. I am fine with both options and have the ability to provide the design if need be. My main focus on this bid is development. If you programmed in Ruby before, please list the best examples of your work.