Of course, if you want expensive, you can go to Freestyle where you can get basically the same thing for $43.
Originally Posted by k_jupiter
I did have the same reaction, I went with it when I saw the prices being asked for laser drilled metal pinholes. That was going to cost me about as much and I was going to have to put it together myself. I appreciated having an idea of the aperture and the fact that it was a nice precise round hole. Oh, and B&H sells the Mamiya cap (which is what this is, an actual Mamiya 645 cap) for $10.