This is really rather a good idea, ShopWiki. We're all aware of the various price comparison sites but there's a problem with them. The rankings and the listings are determined usually by who pays the compilers of the site. So it's possible that you'll get directed to hte people who have paid the most to be recommended rather than who is offering the very best deal or selection.
ShopWiki.com operates rather differently: more like a search engine that a database. It cralws the net just like Google does and is thus able to find all of the people offering a particular item and then rank them according to what their offer is like.
Check out their classic toys section for example. They break the whole subject down into a series of sub units: retro toys for example. Umm, slightly disturbingly, the things I used to play with as a child are described as retro. Ahem.
Or perhaps you would prefer magic trick sets, or stuffed animals (yes, of course the have Pooh!).
They way they do it, by crawling the net, means you get to see all the very best offers: a tool well worth checking out.