Webpage Crawler / Search Engine Script

We are a young startup looking for a reliable individual who has a passion for development. This will be an ongoing project with multiple iterations / stages towards building a larger project. We would like to build one dynamic spider that can crawl websites of within a certain business sector for basic information and then spit the desired data out as a simple .xml or .csv file. It should work as follows: Example: There would be an admin panel where the administrator can set certain parameters. 1. Crawler's Subject matter in this example will be clothes 2. Admin will create a set of (sub)categories (shoes, hats, pants, socks, shorts, etc.) 3. Admin user can Enter the desired URL to crawl ***This script should be built to work across any site inputted*** 4. The crawler will then pull data for individual products storing the product information into categories like: "Category(s), Product Name, Product #, Size, Color(s), Price, Website, Product image URL, Product URL, etc." 5. The Data will be stored in either an XML, CSV or whatever file format solution is be best for pulling the data QUICKLY and on the fly. This info will be stored and frequently checked against for updates (via the crawler). This application will be used continually for 100s to 1000s of sites. Please note we are looking for the right developer, so if you feel the budget too high or even too low please submit your proposals accordingly. We are open to hear what you have to say. If you have any questions please don't hesitate to ask. Again, this is guaranteed to be an ongoing project if this first phase is successful and can become quite lucrative. Thanks!