I was wrong.
On the same day that the post went up, so did a red version with a best offer option. I made what I thought was a bit of a low offer, but I was accepted almost immediately.
The black 1/1 hasn't been listed on Ebay and may never show up. I'm not too worried about that. Even if it does get listed it will probably be for a ridiculous price. I'm very happy to have the four that I've got.