They're available through Rehoboth Aquatics, around 18-20" wild caught. Price last time I asked was $350. They control the market, so you have to inquire about price, which could be affected by availability, business, mood?
That's the only source I know of.
They look like big retropinnis. I'll wait till the price comes down.
I came across a nice 13" male at my LFS . I already had a 11" female I love these guys my male is always active constantly swimming the tank all day long. I've had him about a week and he never missed a beat came in eating and interacting great the first night. The first 2 pics are the male the last 2 are the female. I had her about a month before I found the male. In that time she forgot she was a rope and paired up with my tire track and she spends all her time with him in his cave. While they don't fight I never see the 2 ropes hang out together. Kinda surprised me as they normally like to be kept in groups. But then again she is a tire track rope now.