Price comparison website

Hello,

I need a price comparison website that will crawl a few sources for the product prices, the following features are required:

- Simple way to add sources (eg. crawled website or products feed)
- Compact design

The ideal candidate would have already created a price comparison website and would adjust it for my needs (as you can see the features asked here are minimal so you might have to remove some unneeded parts of the system if you already have it), to be considered for the project you have to include the word pizza at the beginning of your proposal so I know you read this to the end.

Thanks.