Purple hat

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

In-game examine text: "A silly pointed hat."

It has a Grand Exchange buy limit of 150 every four hours, a high alchemy value of 300 gp, and item ID 2940.

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Purple Hat shows an active flip setup with a margin of +475 gp and 2,368 trades over the last 24 hours.

At the buy limit of 150 every four hours, max profit per cycle is about 71.3k gp — high margin with healthy liquidity.