www.kievusa.com - this is the absolute cheapest med.format setup you'll get your hands on.
I have two 88 bodies, 4 120 backs and a fairly wide range of lenses and accessories. As a matter of fact, I'm trying to sell them.
My personal oppinion of this camera - a really good way to snag a medium format setup. Pros won't touch it, but I think it's a good starter. BUT, it does have it's drawbacks.
This camera can be considered no less than COMPLETELY manual - just meter everything on your own. Hell, all my stuff is written in RUSSIAN! The Kiev 88 is said to have been based on stolen Hassey designs when the Russians took East Germany. It looks NEARLY identical if you're not looking too close. But the Russians didn't really have the quality of metals and glass available to them, so they did with what they had.
The result is a camera that's as heavy as and handles like a TANK. The 150mm lense is bean-shaped, so it gets in the way of my shutter release.
Now, image quality isn't bad at all. I've gotten good 16x20's out of it. It probably wouldn't stand up to pro-rigors, but I shoot portraits with it all the time. I just wish it was lighter and a bit easier to use.