The machine -amazingly difficult to find, as days of ebay, amazon and even google searching have proved- is as elusive as ...uhm... something particularly elusive, and even if great Cthulhu decided to grant you one, you might have to pay something close to 2000$. You would then of course get one of the rarest consoles of video gaming history and a fully working example of the best gaming tech 1995 had to offer (provided of course Gabriel Knight II wasn't your kind of game). Rumor has it, that only 2000 pieces of the console were produced and that the GPS actually worked!
Related @ Gnome's Lair: The history of the FPS - a pictorial, SEGA MegaAnser, free MSX gaming
Related Tags: SEGA Saturn, HiSaturn, HiSaturn Navi, SEGA, Hitachi, Retro consoles, Retro gaming, Video games, Games, Game, Retro, Saturn