Available can be "Basic/Gold/Platinum/Occult Auction" or "Fusion Only"
Unique demons can only be gotten through fusion, and you can only have 1 of them at a time.
Some demons get specific skills if bought at certain ranks (★s) in auctions
Racial skill should auto-fill based on race. Element and Mitama don't have racial skills.
Should the auction prices be listed? If so: Which ones? All 5 ranks, ranks 1-3-5, or just rank 3? If just rank 3, use an Exp to add other prices?
If the skill list is combined instead of split by command/passive, the skills should follow the order of command|innate/rank/level -> passives|innate/rank/level.
This should work for OC as well, just need to swap "mystic" for "curse".