I concur that Ebay will probably be your best shot at games. If you have a Rhino Games nearby, they also stock Saturn titles. As far as playing imports, I would suggest a mod switch. If you (or a friend) are handy with a soldering iron, the instructions are in section 9.6 of
this FAQ. I use a switch mod in my Saturn and it works fine. The various converter carts, while easier to use, can possibly damage the cartridge slot of the Saturn (some of the mod carts have connector boards that are a little too thick for the cart slot). I used to use such a cart until I started having trouble getting my memory cartridge to work. A friend did the mod for me and I haven't looked back since. Just one caution on the switch-NEVER change regions with the Saturn TURNED ON.