| Ravingdork |
Pathfinder Roleplaying Game Superscriber; Pathfinder Starfinder Roleplaying Game Subscriber
Short of having non-spell abilities added onto the staff, the GM shoeldn't have much say on the pricing of a staff. Like wands and scrolls, the pricing formula are meant to be adhered to rather strictly.
I do agree that staves should have a theme and that the GM is the final arbiter on whether or not to allow a given staff into his game.