Diabolic worms

Diabolic Worms is a members-only item on the OSRS Grand Exchange in the other category.

In-game examine text: "Their subtle, pulsing glow would be great for catching anglerfish."

It has a Grand Exchange buy limit of 8,000 every four hours, a high alchemy value of 54 gp, and item ID 30773.

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Diabolic Worms shows an active flip setup with a margin of +164 gp and 399,612 trades over the last 24 hours.

At the buy limit of 8,000 every four hours, max profit per cycle is about 1.31m gp — high margin with healthy liquidity.