This isn't something Allakhazam has access to, so the info would have to be contributed by users. If you can get together a complete list of guild points, I'm sure they'd be happy to add it. But the only way to find out how many points an item is worth is to turn it in, and there are a LOT of items. It would have to be a community project to get that much info together in our lifetimes. I believe there's a thread in the crafting forum that has a somewhat incomplete list, you could start there.