That's still very cheap for an interchangeable lens MF rangefinder. A Mamiya 7 will cost you around $2000 just for the body.

There's the Mamiya Press which you can get for cheap but those are very large and heavy.

You are correct, and I agree. My point is that there several things like this that I refrain from completing because they become too cumbersum and expensive to build in small batches.