What spell requires a 100gp pearl?
For the expensive components, PF went: "When a spell calls for an expensive material component, a psychic spellcaster can instead use any item with both significant meaning and a value greater than or equal to the spell’s component cost. For example, if a spiritualist wanted to cast raise dead to bring her dead husband back from the grave, she could use her 5,000 gp wedding ring as the spell’s material component. " (They got rid of all of the non-expensive ones for the psychic spells).