check out the item book for item information ^^ (some of it is a wip, sorry ><)

Myo items & trait crystals:

rare Terragrin MYO: 60 hollows (2 per person)

Signed trait: 50 hollows (3 per person)

mutant trait: 40 hollows (2 per person)

rare trait: 30 hollows (5 per person)

Alterations: 

Scarlet feather: 50 hollows (2 per person)

Arcane items:

minimal Arcane crystal: 50 hollows (2 per person)

minor Arcane crystal: 70 hollows (2 per person)