Here's a page worth looking at from Racketboy.
The main article isn't all-inclusive (focuses more on US releases), but there are a lot of comments that mention most of the rare titles for the system, including some of the super rare promos (which aren't games at all). Oh, but not much actual print information (that stuff is harder to find).
I also found this: http://www.risingstuff.com/forums/vi...c.php?f=7&t=33
Again nothing on actual print numbers, and some of the price numbers are wildly inaccurate (2300 for Krazy Ivan?), but there's a ton of info, if you can manage to sift through what's actually relevant.