Plane Sailing
Astral Admin - Mwahahaha!
An interesting comparison could be made with the ring of minor spell storing which stores 3 levels of spells, and so could hold 3 copies of the enlarge spell for 18,000gp.
What you want is less flexible than that but doesn't have to be recharged by pumping spells back into it. My gut feeling is that 12,000gp would be fair for something that increases your base unarmed damage and gives you 10ft reach several times a day.
What you want is less flexible than that but doesn't have to be recharged by pumping spells back into it. My gut feeling is that 12,000gp would be fair for something that increases your base unarmed damage and gives you 10ft reach several times a day.