The staff becomes untradeable once used (or broken), but fully repairing it will make it tradeable again. The staff will degrade to a broken state after 60,000 charges of combat (but loses 2 charges per hit, so has a minimum duration of 5 hours of combat). It can be fixed by Repair NPCs such as Bob in Lumbridge, or at an armour stand in a Player-owned house. A full repair, without discounts, costs . Creating a noxious staff by buying a spider leg yields a profit of .