>>5678385There is pic related : the Zukan, great quality etc, a little pricey, but hopefully not the most expensive one.
There is also this diaporama :
http://i1275.photobucket.com/albums/y453/AutumnalRain/037.jpgAwesome, but rare and not cheap. It doesn't appear often so I can't give you an actual price range, but I'd say expect at least 40$. Some of these diorama go for a hefty price.
Now these two figures aren't easy to find and not cheap. If you're searching for more common figures, you have the kids obviously, and the old Tomy. Sadly the little guy doesn't get that much attention.