There isn't that much literature that I am able to find on the Sphinx. I am purchasing it used and $800 is more than I would like to pay as well, but they are so rare that I saw one and had to have it. It was an impulse buy, but I have a feeling I am going to be very satisfied.
Is there anything I should look for on the gun to make sure it is in perfect condition, it looks mint, but this is going to be my first purchase.
Also, what do you think is a good price to pay for it?