Trap the Soul

Note that items with the Trap the Soul (item enchantment) have no Hit Die requirement or material component.

Material Component cost
Thus overall costs for your standard component supply are:
 * You can usually find 1 fragment for 1pp on the Auction hall. This is 1,000pp per Tiny Khyber, which can more efficiently be purchased at the Portable Hole for a haggle affected base price 100pp.
 * Tiny: 100 plat/ea. &rarr; 10,000 plat/100
 * Small: 500 plat/ea. &rarr; 10,000 plat/20
 * Average: 1,250 plat/ea. &rarr; 10,000 plat/8

Soul Gem distribution notice
When in a group the soul gems you create by using this spell can be picked up by any member of the party. This should be considered before using this relatively expensive spell.

External References

 * Trap the Soul, 20-30 HD results thread, by Angelus_dead
 * List of Soul Gems (colors, description text)