Mystic hat

Mystic Hat is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "A magical hat."

It has a Grand Exchange buy limit of 125 every four hours, a high alchemy value of 9.0k gp, and item ID 4089.

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Mystic Hat shows an active flip setup with a margin of +1.2k gp and 3,059 trades over the last 24 hours.

At the buy limit of 125 every four hours, max profit per cycle is about 150.1k gp — high margin with healthy liquidity.