Dreacast/Saturn/Master Syst. GameList rarity or price guide

[Mait1571]

Does anybody know of any great websites where I can find a rarity list or a Price Guide for these gaming systems DreamCast, Saturn, and Sega Master Stystem. I need to know what are the rarest games of each and what they go for. Email me please at:
Mait1571@hotmail.com

[digitalpress]

Dreamcast and Saturn are here:
http://www.digitpress.com/lists.htm

but for Master System, you have to buy the book!
http://www.digitpress.com/dpg_plug.htm