I stopped at the Ottoco booth at Barber about seven years ago and struck a cash deal. $500 shipped. It was an "Ok" deal at the time, but considering what HVC sells them for now, I think I made out like a Bandit.
About a month later, they showed up at my door. About a week later I got an email apologizing and explaining that the heads they sent missed a machining step, and could I send them back. I did, and they sent me a corrected set (all on their dime).
They've been sitting on a shelf since. Now that I have the 350 motor in, and she seems to be mostly sorted out, it's about time they got installed ;D