Thanks everyone! I went to look at it, and it was in great shape. It does have the disks for the 150 lens, so that was a good thing. I asked the guy why he was selling, and he wants to go digital. Since I had an extra 20D and some accessories for it laying around, we arranged a trade. Win-win - I'm thrilled!
You should be thrilled. In two years the 20D will be superseded several times and considered obsolete while the RB67 will still be a great film camera for you.
Warning!! Handling a Hasselblad can be harmful to your financial well being!
Nothing beats a great piece of glass!
I leave the digital work for the urologists and proctologists.
The 150mm lens (originally) came with three diffusion disks that can be inserted behind the front element. They give varying degrees of softness, although the lens can be used without them as well. Having the disks included changes the value of the lens, at least in my experience...