We'd have to figure it out without human intervention. There are some eBay modules written in Perl that could do most of what we need with little other effort, so I think I'm going to try developing it. I would make it real-time of course - people don't want to wait.
Oh, and thanks David. I think I might need IBP now that I've seen a report from it. Although we don't sell cordless power tools on that site (stupid
SEO firm - those metas stink), you pointed out to me that our other site is now in the top 10 on Google for that term, and I was able to apply much of the comparision stuff to that site. I know what I'm going to change here very soon. :-)
Oh, and about your comment implying that people wouldn't search for tool parts (that's what I took that as) - our CEO here used to agree, but I proved him very wrong. Being #1 for that term has brought us a ton of business.
You just never know what people are going to look for online.
Brian.