So I was rereading the Pearl of power description when I came across the last paragraph:
Different pearls exist for recalling one spell per day of each level from 1st through 9th and for the recall of two spells per day (each of a different level, 6th or lower).
By my understanding, this paragraphs describes two different pearls of power. One that restores one of each slot from 1st to 9th level and another that restores two spells of 6th or lower, effectively working as two 6th pearls of power in one.
The problem is that there is no cost listed for the first pearl, the one that restores one spell of each level. Am I just misreading the pearl of power entry or is it really just not detailed?