I have an idea:
why not use something like alternate keep track, but perhaps without the need for updating?(obviously will become outdated, but my idea is a catalog)
You click on a series and on the following page is a list of all known for sale sites with links to the series on their sites. This would make it a lot easier to find what we are looking for without going from site to site to inner sites....maybe I'm inefficient, but doesn't this sound like a good idea?
maybe a search engine function embedded too, but I'm no html guy.
thoughts?