Ourg bones

Ourg Bones is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "Ancient ogre bones from the ogre burial tomb."

It has a Grand Exchange buy limit of 7,500 every four hours, a high alchemy value of 1 gp, and item ID 4834.

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Ourg Bones shows an active flip setup with a margin of +13.3k gp and 3,923 trades over the last 24 hours.

At the buy limit of 7,500 every four hours, max profit per cycle is about 99.62m gp — high margin with healthy liquidity.