Job assignement: Search engine

Hi!

How much work is it in making a search engine for the web? What I want is an engine which sorts webpages selling hardware by price, simply to find out which webpage got the cheapest hardware you search for.

Does anyone know about software doing this already? Or can anyone make such an engine?

Thanks for your help!

Making a search engine is easy. Most of your work wouldnt relie on the search engine, but on the Web Bot that checks all the sites selling hardware and sort price/site

im sure theres allready sites that do that

Like pricewatch.com?