Just a quick note, some of the US Saturn games are ridiculously expensive at this point:
ie:
SF Collection
Panzer Dragoon Saga
Shining Force 3
Sonic Jam
Mega Man 8
Dragon Force
Guardian Heroes
Other than Panzer Dragoon Saga, most games are also published on other platforms, new/sealed games are virtually impossible to find for the aforementioned titles, not surprisingly, highest valued titles are those not available on other consoles.