I have a used Mamiya 180 "C" for the RB67 system in ugly condition for sale. Price is $35.00 shipping included to continental USA only.
The shutter speeds are accurate and the lens functions okay. The front element has fungus and many scratches. It is still sharp, but is susceptible to lens flare.
I'd be interested in seeing a picture. I've actually been looking for a wide angle lens but with the way money is I'm quick to jump on anything that's inexpensive.
Ads for equipment belong in the classifieds not in the forums. Although they aren't currently showing in the sidebar (Sean's fixing that) the classifieds can be accessed from the "classifieds" tab at the top of the screen.