How could I have a price comparison search engine for textbooks?

I’m wanting my visitors to be able to type int the title of a textbooks that they need, and then a list is displayed of the prices from cheapest to most expensive. I only want to show prices from the merchants that I’m an affiliate to, so let’s say I have ten affiliate accounts with textbook websites. I would like to display the prices for that one book on all the different websites so my customer can see where to get the best deal. How would I do something like that? I’m very new at all this, so I would need something pretty basic.

Thanks,
Chase Billington