If your vendor is in ATL Luna, it may have been me who bought them (I got a reptile, elemental, undead and arachnid - didn't see any demon or repond).
I was going to throw out 175M offer on the repond. Seems like you want a bit more. 500M over my budget so I won't meet that. Maybe would move up higher on the 175M. The LRC is definitely pretty sweet, but I just don't rely on Spellbooks for LRC needs.
If you still don't get any offers and would be willing to take that, let me know. Good luck