So, I'm looking the Ioun kineticist for a future Shattered Star campaign, but there's something that holds me back, that being that when you use the telekinetic blast you deal the kinetic blast damage to the enemy and to the object you throw. Seeing as ioun stones only have hardness 5 and 10 hp, and the cheapest ones cost 25gp doesnt this make this archetype stupidly expensive?
Or there is something that I'm missing?