The most common lenses for the super are the 55mm, 85mm, and the 150mm. I have every lens for the super except the 40mm and the fisheye. It took me a few years to find the 35mm and I had to fly to the state of Washington to pick it up (long story). If you don't mind paying a bit more, try Ross Yerkes in LA. He has most of the lens for the super - however I know he doesn't have the fisheye. If he did I would have bought it. Hope this helps - happy hunting!!!
Kowa also make a 250, which I have the, a marco 120?, and 2X converter, I have seem 250 on ebay. I also recall a 500 but I have never seen one for sale, might be mistaken about the 500.