Battlestaff

Battlestaff is a members-only item on the OSRS Grand Exchange in the weapons category.

In-game examine text: "It's a slightly magical stick."

It has a Grand Exchange buy limit of 11,000 every four hours, a high alchemy value of 4.2k gp, and item ID 1391.

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Battlestaff currently has a flip margin of −29 gp, which isn't profitable to flip right now despite 1,488,146 trades over the last 24 hours.

Items with negative or zero margins like this are better watched than actively flipped until the spread widens.