Bones

Bones is a free-to-play item on the OSRS Grand Exchange in the other category.

In-game examine text: "Bones are for burying!"

It has a Grand Exchange buy limit of 3,000 every four hours, a high alchemy value of 1 gp, and item ID 526.

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Bones currently has a flip margin of +0 gp, which isn't profitable to flip right now despite 221,285 trades over the last 24 hours.

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