Hassalblad V Mount Adapter?

[psreilly]

I have a Mamiya rz 67 pro ii. I've been saving up for a digital back, possibly the phase one p21+ or the Leaf Aptus 12 22mp. Because I don't have the mamiya rz pro iid (believe me I regret it now) it becomes a lot harder to get backs that will fit to the camera body. I've had a hard time finding v mount adpaters. So my question is where could I find an adapter, and does anybody know the price range for them? I'm guessing they're overpriced like most things in the MF digital photography world. I have about 1K saved up now which isn't even half of what i'll need for the two backs. P21 i've seen for around 3K and the Leaf Aptus 12 i've seen just under 6K, so not horrible I suppose. Any help on where to find the v mount adapters, or any help period with this would be appreciated. Thanks