I think you tried to buy the full fin set, right? I'm gonna go ahead and say you can have that because it's not your fault no one was here to see it or remove the orbs.
Mais can never be traded or resold. That was something Rubi was very clear on.
as for breeding, I mean... the official breeding will no longer be a thing. It was said in the closing journal. This group is closed. Neither NPCs or references are an open folder. I'm just still around to clean up the remains and keep the open folder tidy XD