Looking for Fisheye lense

I am trying to get a fisheye lense for my Pentax K1000 but so far the only ones I found cost 1000's of dollars!!!

I did find a "semi fisheye" lense reasonably priced, but am unsure of what degree pictures it takes.

I have a Samsung digimax 210 digital camera, but I don't know if there are any fisheye converters for that.

Any suggestions?

You can try here, I've bought a lens from him last year, 2,6-16mm full format:
http://ourworld.compuserve.com/homepages/fotowiese/e/etop_5.htm

There is also the Peleng 3,5 - 8mm, a round fisheye. But you can't get a full round image because it's a lens for the larger (38 or 40mm) russian film.

Thomas