Spade

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

In-game examine text: "A slightly muddy spade."

It has a Grand Exchange buy limit of 40 every four hours, a high alchemy value of 1 gp, and item ID 952.

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Spade shows an active flip setup with a margin of +4 gp and 12,126 trades over the last 24 hours.

At the buy limit of 40 every four hours, max profit per cycle is about 160 gp — high margin with healthy liquidity.