I'm willing to pay whatever is appropriate depending on rarity of the item.
I'm aware that MANY of the following are not in the gacha, but since I have no way of knowing which are or aren't might as well list all that I need:
Hellhound
Specter Fighter
Bandit Boss Human
Specter Warrior
New Gremlin
Gorgon
Stone Horse
Skeleton Laghodessa
Hellcat
Stone Horse Keeper
Mirror Witch
Bug Bear
Hell Steed
Castle Wall Golem
Head Hyena
No-Face Nelson
Succubus
Turtle
Merrow
And ALL the glowing statue bosses.